# Kunio-kun

The Kunio-kun (くにおくん) series (typically localized as River City) is a video game series started by Technōs Japan. The series is now handled by Arc System Works who purchased all of the intellectual property rights from Technōs' successor, Million Corp. The first game in the series is fully titled Nekketsu Kōha Kunio-kun (熱血硬派くにおくん), which roughly translates to "Hot Blood Tough Guy Kunio", with Nekketsu being the name of the series' title character Kunio's high school. The kun suffix after his name is an informal Japanese honorific usually applied to young males. The series originated in arcades, before appearing on the Famicom console. Kunio later became Technōs Japan's main mascot, appearing on the company's logo in several games and television commercials.
A few of the early Kunio games for the NES were localized for the North American market. These include Renegade, River City Ransom, Super Dodge Ball, Crash 'n' the Boys: Street Challenge and Nintendo World Cup, which are heavily "Americanized" versions of the Kunio-kun games. Technōs Japan has released over twenty Kunio-kun titles for the Famicom, Game Boy, and Super Famicom in Japan. In addition, licensed ports of the games were made for other platforms such as the PC-Engine (through Naxat Soft), Mega Drive (through Pal Soft) and the X68000 (through Sharp).

## Development

The original game Nekketsu Kōha Kunio-kun was created by Yoshihisa Kishimoto. He pitched a semi-autobiographical game based on his teenage high school years, with the protagonist Kunio-kun loosely based on himself. Kishimoto recalled his experiences as a high school student regularly getting into fights on a daily basis, which was partly triggered by a break-up with a girl who dumped him. Kishimito was also a fan of Bruce Lee's Hong Kong martial arts films, particularly Enter the Dragon (1973). He combined elements from Lee's Enter the Dragon with that of his own life to create the concept for Nekketsu Kōha Kunio-kun. He went on to design Double Dragon (1987), which was originally envisioned as a direct sequel to the original Kunio-Kun game, before becoming a new game with a different cast and setting.
The game's title and its protagonist, Kunio (variously renamed "Alex" and "Crash Cooney" in the United States), were named after Technōs Japan's former president, Kunio Taki. Many of the later games in the Kunio-kun series, particularly those under the Downtown Nekketsu moniker, were the handiwork of two men: Mitsuhiro "Yoshimitsu" Yoshida and Hiroyuki "Mokeke" Sekimoto.
Renegade, the Western localization of Nekketsu Kōha Kunio-kun, spawned its own separate spin-off series developed by British company Imagine Software for home computers. There were two Renegade sequels: Target: Renegade (1988) and Renegade III: The Final Chapter (1989).

## List of games

| Title | Details |
| Nekketsu Kōha Kunio-kun Renegade Original release date(s): JP: May 1986 | Release years by system: 1986 – Arcade 2006 – PlayStation 2 2012 – Microsoft Windows |
| Nekketsu Kōha Kunio-kun Renegade Original release date(s): JP: May 1986 | Notes: The first game in the series, in the original Nekketsu Kōha Kunio-kun (熱血硬派くにおくん, "Hot-Blooded Tough Guy Kunio") the player takes control of Kunio as he fights against the various gangs who bully his friend Hiroshi at the start of each stage. The international version, titled Renegade, features changed graphics and dubbed voices that gives the game a more western-looking setting. The plot was also changed from Kunio beating gangs to avenge his friend to the main hero having to rescue his girlfriend. Released for the PlayStation 2 in Japan as part of the Ore-tachi Game Center Zoku lineup on January 26, 2006. |
| Nekketsu Kōha Kunio-kun Renegade Nekketsu Renegade Kunio-kun Original release date(s): JP: April 17, 1987 | Release years by system: 1987 – Family Computer 2008 – Virtual Console |
| Nekketsu Kōha Kunio-kun Renegade Nekketsu Renegade Kunio-kun Original release date(s): JP: April 17, 1987 | Notes: Based on the Nekketsu Kōha Kunio-kun arcade game, the Famicom version was Technōs Japan's first game for the home console market. The final stage features a maze-like structure in which the wrong path leads to a previous stage. Released in Japan for the Virtual Console on March 18, 2008. |
| Nekketsu Kōkō Dodgeball Bu Super Dodge Ball Original release date(s): JP: November 1987 | Release years by system: 1987 – Arcade 1988 – X68000 2008 – PlayStation 2 |
| Nekketsu Kōkō Dodgeball Bu Super Dodge Ball Original release date(s): JP: November 1987 | Notes: Nekketsu Kōkō Dodgeball Bu (熱血高校ドッジボール部) is the second game starring Kunio and the first sports game starring the character. In this game, Kunio leads his school's dodgeball team (Nekketsu High School) as he competes against the rival Hanazono High School, and then proceeds to compete against five international teams (England, Iceland, China, Africa, and America). Released in the United States as Super Dodge Ball, in which the Japanese teams became Americans and vice versa. A port for the X68000 was released in September 1988. Released for the PlayStation 2 in Japan as part of the Ore-tachi Game Center Zoku lineup on March 23, 2006. |
| Nekketsu High School Dodgeball Club Super Dodge Ball Original release date(s): JP: July 26, 1988 | Release years by system: 1988 – Family Computer 2003 – Microsoft Windows 2008 – Virtual Console |
| Nekketsu High School Dodgeball Club Super Dodge Ball Original release date(s): JP: July 26, 1988 | Notes: Nekketsu High School Dodgeball Club (Nekketsu Kōkō Dodgeball Bu 熱血高校ドッジボール部, Nekketsu High School Dodgeball Club) is the second Kunio game for the Family Computer. The game adds two new teams, India and the USSR. The NA version of Super Dodge Ball has the main team as Americans and the final team to be the Soviet Union. Included in the Kunio-kun Nekketsu Collection 1 for the Game Boy Advance in 2005. Released for the Virtual Console in Japan on June 17, 2008. |
| Downtown Nekketsu Story River City Ransom Street Gangs Original release date(s): JP: April 25, 1989 | Release years by system: 1989 – Family Computer 1990 – X68000 1993 – PC Engine 2007 – Virtual Console |
| Downtown Nekketsu Story River City Ransom Street Gangs Original release date(s): JP: April 25, 1989 | Notes: Downtown Nekketsu Story (Downtown Nekketsu Monogatari ダウンタウン熱血物語, Tale of Downtown Nekketsu) is the third Kunio game and the first produced specifically for consoles. Kunio teams up with rival Riki in order to save Riki's girlfriend from the Reihō High School gang. The game is a side-scrolling beat-em-up which combined RPG elements such as buying items and equipment that would increase the player's stats or acquire new moves. Released in North America as River City Ransom and in Europe as Street Gangs. The X68000 version, released in April 1990, features a larger map with more areas and new bosses. The PC Engine Super CD-ROM$^2$ version, released on December 24, 1993 in Japan, features an arranged soundtrack in CD-DA format and voice acting. The Famicom version was released for the Virtual Console in Japan on October 23, 2007. This game is part of the Japan-only list of games for the Nintendo Classic Mini: Family Computer. |
| Nekketsu Kōkō Dodgeball Bu: PC Bangai Hen Original release date(s): JP: March 30, 1990 | Release years by system: 1990 – PC Engine 2008 – Virtual Console |
| Nekketsu Kōkō Dodgeball Bu: PC Bangai Hen Original release date(s): JP: March 30, 1990 | Notes: Nekketsu Kōkō Dodgeball Bu: PC Bangai Hen (熱血高校ドッジボール部 PC番外編, Nekketsu High School Dodge Ball Club: PC Extra Edition) is a special version of the original Dodge Ball which combines the graphics and teams of the arcade version with the emphasis on character-specific statistics and team formation. Features an arcade-style mode and a plot-oriented Quest Mode. Released for the Virtual Console in Japan on September 30, 2008. |
| Nekketsu High School Dodgeball Club: Soccer Story Nintendo World Cup Original release date(s): JP: May 18, 1990 | Release years by system: 1990 – Family Computer, X68000 2008 – Virtual Console |
| Nekketsu High School Dodgeball Club: Soccer Story Nintendo World Cup Original release date(s): JP: May 18, 1990 | Notes: The fourth Kunio game, Nekketsu High School Dodgeball Club: Soccer Story (Nekketsu Kōkō Dodgeball Bu: Soccer Hen 熱血高校ドッジボール部 サッカー編, Nekketsu High School Dodgeball Club: Soccer Edition) features Kunio and the dodgeball team helping Misako, the manager of the Nekketsu Soccer Club, as they participate in a national soccer tournament against other schools. This is one of the few Kunio games which is not to feature Riki Samejima. Released internationally by Nintendo under the title of Nintendo World Cup, in which the game was given a more worldwide theme. Released for the X68000 in Japan in October 1990. Released for the Virtual Console in Japan on October 7, 2008. |
| Downtown Nekketsu March: Super-Awesome Field Day! Original release date(s): JP: October 12, 1990 | Release years by system: 1990 – Family Computer 1992 – PC Engine 2007 – Virtual Console |
| Downtown Nekketsu March: Super-Awesome Field Day! Original release date(s): JP: October 12, 1990 | Notes: Downtown Nekketsu March: Super-Awesome Field Day (Downtown Nekketsu Kōshinkyoku: Soreyuke Daiundōkai ダウンタウン熱血行進曲 それゆけ大運動会, Downtown Nekketsu March: Let's Go to the Great Athletic Meet) features Nekketsu competing against three other teams (Hanazono, Reiho, and an inter-school union) who compete in a series of four athletic events. Up to four players can participate. Released for the PC Engine Super CD-ROM$^2$ by Naxat Soft in Japan on July 14, 1992. The Famicom version was released for the Virtual Console in Japan on December 4, 2007. This game is part of the Japan-only list of games for the Nintendo Classic Mini: Family Computer. The game was released on Nintendo Switch Online's Famicom library of games on August 22, 2019 in Japan and Hong Kong, and released in Western regions' NES game library on September 6, 2023. |
| Nekketsu Kōha Kunio-kun: Bangai Rantō Hen Original release date(s): JP: December 7, 1990 | Release years by system: 1990 – Game Boy |
| Nekketsu Kōha Kunio-kun: Bangai Rantō Hen Original release date(s): JP: December 7, 1990 | Notes: Nekketsu Kōha Kunio-kun: Bangai Rantō Hen (熱血硬派くにおくん 番外乱闘編, Nekketsu Tough Guy Kunio: The Further Brawls) is the first Kunio game for a portable system. Released internationally with changed graphics and music as a Game Boy version of Double Dragon II (unrelated to Double Dragon II: The Revenge). |
| Nekketsu Kōkō Soccer Bu: World Cup Hen Original release date(s): JP: April 26, 1991 | Release years by system: 1991 – Game Boy |
| Nekketsu Kōkō Soccer Bu: World Cup Hen Original release date(s): JP: April 26, 1991 | Notes: Nekketsu Kōkō Soccer Bu: World Cup Hen (熱血高校サッカー部 ワールドカップ編, Nekketsu High School Soccer Club: World Cup Edition) is a Game Boy version of Soccer Hen based on the international version of the game (Nintendo World Cup). |
| Downtown Special: Kunio-kun's Historical Period Drama! Original release date(s): JP: July 26, 1991 | Release years by system: 1991 – Family Computer 1993 – Game Boy 2009 – Virtual Console 2011 – Virtual Console (3DS) |
| Downtown Special: Kunio-kun's Historical Period Drama! Original release date(s): JP: July 26, 1991 | Notes: Downtown Special: Kunio-kun's Historical Period Drama! (Downtown Special: Kunio-kun no Jidaigeki da yo Zen'in Shūgō! ダウンタウンスペシャルくにおくんの時代劇だよ全員集合！, Downtown Special: It's Kunio's Period Piece, Assemble Everyone!!) is a follow-up to Downtown Nekketsu Monogatari in which the characters act out a period play. A Game Boy port was released on December 22, 1993 in Japan. This version of the game was re-released for the Virtual Console (3DS only) on June 7, 2011. The Famicom version of the game was released for the Virtual Console on May 12, 2009. |
| Nekketsu Kōkō Dodgeball Bu: Kyōteki! Dodge Soldier no Maki Original release date(s): JP: November 8, 1991 | Release years by system: 1991 – Game Boy 2011 – Virtual Console (3DS) |
| Nekketsu Kōkō Dodgeball Bu: Kyōteki! Dodge Soldier no Maki Original release date(s): JP: November 8, 1991 | Notes: Nekketsu Kōkō Dodgeball Bu: Kyōteki! Dodge Soldier no Maki (熱血高校ドッジボール部強敵！闘球戦士の巻, Nekketsu High School Dodgeball Club: Fierce Rival! Episode of the Dodge Soldiers) is a Game Boy specific version of Nekketsu Kōkō Dodgeball Bu. It was released for the 3DS Virtual Console in Japan on August 3, 2011. |
| Nekketsu Kōkō Dodgeball Bu: CD Soccer Hen Original release date(s): JP: December 20, 1991 | Release years by system: 1991 – PC Engine 2008 – Virtual Console |
| Nekketsu Kōkō Dodgeball Bu: CD Soccer Hen Original release date(s): JP: December 20, 1991 | Notes: Nekketsu Kōkō Dodgeball Bu: CD Soccer Hen (熱血高校ドッジボール部 CDサッカー編, Nekketsu High School Dodgeball Club: CD Soccer Edition) is a version of Soccer Hen released for the PC Engine Super CD-ROM$^2$ by Naxat Soft. This version has add five national teams (France, Brazil, Argentina, Italy and Germany) in Tournament mode which is after beating the final match. It was released for the Virtual Console on November 4, 2008. |
| Go-Go! Nekketsu Hockey Club: Slip-and-Slide Madness Original release date(s): JP: February 7, 1992 | Release years by system: 1992 – Family Computer 2009 – Virtual Console |
| Go-Go! Nekketsu Hockey Club: Slip-and-Slide Madness Original release date(s): JP: February 7, 1992 | Notes: Go Go! Nekketsu Hockey Club: Slip and Slide Madness (Ike Ike! Nekketsu Hockey Bu: Subette Koronde Dairantō いけいけ！熱血ホッケー部「すべってころんで大乱闘」, Go Go! Nekketsu Hockey Club: "Skate, Fall, Great Free-for-All Brawl") centers around Kunio's attempt to help out his school's hockey club. The game was planned to be released in North America under the title of Crash 'n the Boys: Ice Challenge, but was canceled. A teaser of the game was featured in Crash 'n the Boys: Street Challenge. It was released for the Wii Virtual Console in Japan on August 18, 2009. |
| Nekketsu Kōkō Dodgeball Bu: PC Soccer Hen Original release date(s): JP: April 13, 1992 | Release years by system: 1992 – PC Engine |
| Nekketsu Kōkō Dodgeball Bu: PC Soccer Hen Original release date(s): JP: April 13, 1992 | Notes: Nekketsu Kōkō Dodgeball Bu: PC Soccer Hen (熱血高校ドッジボール部 PCサッカー編, Nekketsu High School Dodgeball Club: PC Soccer Edition) is a version of Soccer Hen released for the PC Engine HuCard. This version is almost identical to the PC Engine Super CD-ROM$^2$ version, but it lacks arranged soundtrack, etc. |
| Surprise! Nekketsu New Records! The Distant Gold Medal Crash 'n the Boys: Street Challenge Original release date(s): JP: June 26, 1992 | Release years by system: 1992 – Family Computer 2011 – Virtual Console |
| Surprise! Nekketsu New Records! The Distant Gold Medal Crash 'n the Boys: Street Challenge Original release date(s): JP: June 26, 1992 | Notes: Surprise! Nekketsu New Records! The Distant Gold Medal (Bikkuri Nekketsu Shinkiroku: Harukanaru Kin Medal びっくり熱血新記録 はるかなる金メダル, Astonishing New Records of Nekketsu: The Distant Gold Medal) is a sequel to Downtown Nekketsu March. It was released in North America under the title of Crash 'n the Boys: Street Challenge. It was released for the Virtual Console in Japan on October 18, 2011. |
| Downtown Nekketsu Kōshinkyoku: Dokodemo Daiundōkai Original release date(s): JP: July 24, 1992 | Release years by system: 1992 – Game Boy 2012 – Virtual Console (3DS) |
| Downtown Nekketsu Kōshinkyoku: Dokodemo Daiundōkai Original release date(s): JP: July 24, 1992 | Notes: Downtown Nekketsu Kōshinkyoku: Dokodemo Daiundōkai (ダウンタウン熱血行進曲 どこでも大運動会, Downtown Nekketsu March: The Great Portable Athletic Meet) is a Game Boy-specific version of Kōshinkyoku. Released for the Virtual Console in Japan on May 16, 2012. |
| Shodai Nekketsu Kōha Kunio-kun Original release date(s): JP: August 7, 1992 | Release years by system: 1992 – Super Famicom |
| Shodai Nekketsu Kōha Kunio-kun Original release date(s): JP: August 7, 1992 | Notes: Shodai Nekketsu Kōha Kunio-kun (初代 熱血硬派くにおくん, The Original Nekketsu Tough Guy Kunio) is the first Kunio-kun game released for the Super Famicom. It is a beat-em-up RPG set during the end of Kunio's second high school year as he and his friends take a school trip to Osaka. |
| Nekketsu Kōkō Dodgeball Bu: MD Soccer Hen Original release date(s): JP: August 7, 1992 | Release years by system: 1992 – Mega Drive |
| Nekketsu Kōkō Dodgeball Bu: MD Soccer Hen Original release date(s): JP: August 7, 1992 | Notes: Nekketsu Kōkō Dodgeball Bu: MD Soccer Hen (熱血高校ドッジボール部 MDサッカー編, Nekketsu High School Dodgeball Club: MD Soccer Edition) is a Mega Drive-specific version of Soccer Hen. This is the only version where all the teams are playable in the 2 Player Exhibition Mode. |
| Nekketsu Fighting Legend Original release date(s): JP: December 23, 1992 | Release years by system: 1992 – Family Computer |
| Nekketsu Fighting Legend Original release date(s): JP: December 23, 1992 | Notes: Nekketsu Fighting Legend (Nekketsu Kakutō Densetsu 熱血格闘伝説, Nekketsu Fighting Legend) is a tournament-style fighting game. |
| Kunio-kun's Nekketsu Soccer League Original release date(s): JP: April 23, 1993 | Release years by system: 1993 – Family Computer |
| Kunio-kun's Nekketsu Soccer League Original release date(s): JP: April 23, 1993 | Notes: Kunio-kun's Nekketsu Soccer League (Kunio-kun no Nekketsu Soccer League くにおくんの熱血サッカーリーグ) is the Famicom sequel to Soccer Story. |
| Bikkuri Nekketsu Shinkiroku: Dokodemo Kin Medal Original release date(s): JP: July 16, 1993 | Release years by system: 1993 – Game Boy 2011 – Virtual Console (3DS) |
| Bikkuri Nekketsu Shinkiroku: Dokodemo Kin Medal Original release date(s): JP: July 16, 1993 | Notes: Bikkuri Nekketsu Shinkiroku: Dokodemo Kin Medal (びっくり熱血新記録！どこでも金メダル, The Astonishing New Records of Nekketsu: Portable Gold Medal) is a Game Boy-specific version of Shinkiroku. It also features umbrella that replaces Swimming event from the Famicom version. It was released for the 3DS Virtual Console in Japan on November 9, 2011. |
| Kunio-kun no Dodgeball da yo Zen'in Shūgō! Original release date(s): JP: August 6, 1993 | Release years by system: 1993 – Super Famicom |
| Kunio-kun no Dodgeball da yo Zen'in Shūgō! Original release date(s): JP: August 6, 1993 | Notes: Kunio-kun no Dodgeball da yo Zen'in Shūgō! (くにおくんのドッジボールだよ全員集合！, It's Kunio's Dodgeball, Assemble Everyone!) is the Super Famicom sequel to the original Dodgeball for the Famicom. It was released outside Japan for the Nintendo Switch in September 18, 2024 through the Super Nintendo Entertainment System - Nintendo Switch Online app without an English localization. |
| Nekketsu! Street Basketball: All-Out Dunk Heroes Original release date(s): JP: December 17, 1993 | Release years by system: 1993 – Family Computer |
| Nekketsu! Street Basketball: All-Out Dunk Heroes Original release date(s): JP: December 17, 1993 | Notes: Nekketsu! Street Basketball: All Out Dunk Heroes (Nekketsu! Street Basket: Ganbare Dunk Heroes 熱血！すとりーとバスケット ～がんばれDunkHeroes～) is the final Kunio-kun game for the Family Computer. |
| Downtown Nekketsu Baseball Monogatari: Yakyū de Shōbu da! Kunio-kun Original release date(s): JP: December 17, 1993 | Release years by system: 1993 – Super Famicom |
| Downtown Nekketsu Baseball Monogatari: Yakyū de Shōbu da! Kunio-kun Original release date(s): JP: December 17, 1993 | Notes: Downtown Nekketsu Baseball Monogatari: Yakyū de Shōbu da! Kunio-kun (ダウンタウン熱血べーすぼーる物語 野球で勝負だ！くにおくん, The Baseball Tale of Downtown Nekketsu: Its a Baseball Match! Kunio-kun) is the third Kunio game for the Super Famicom. This was the first and only game (until Riki Densetsu was released in 2012) in the Downtown Nekketsu series where Kunio is not the main character. |
| Shin Nekketsu Kōha: Kunio-tachi no Banka Original release date(s): JP: April 29, 1994 WW: 2022 | Release years by system: 1994 – Super Famicom 2022 – Nintendo Switch, PlayStation 4, PlayStation 5, Xbox One, Microsoft Windows |
| Shin Nekketsu Kōha: Kunio-tachi no Banka Original release date(s): JP: April 29, 1994 WW: 2022 | Notes: Shin Nekketsu Kōha: Kunio-tachi no Banka (新・熱血硬派 くにおたちの挽歌, The New Nekketsu Tough Guy: The Elegy of Kunio and Co.) is the fourth Kunio game for the Super Famicom. It is chronologically set between Nekketsu Renegade Kunio-Kun and Downtown Nekketsu Story. Has been re-released and localized by WayForward as River City Girls Zero, with a physical version by Limited Run Games. |
| Kunio no Oden Original release date(s): JP: May 27, 1994 | Release years by system: 1994 – Super Famicom |
| Kunio no Oden Original release date(s): JP: May 27, 1994 | Notes: Kunio no Oden (くにおのおでん) is the final Kunio game for the Super Famicom. |
| Nekketsu! Beach Volley da yo: Kunio-kun Original release date(s): JP: July 29, 1994 | Release years by system: 1994 – Game Boy |
| Nekketsu! Beach Volley da yo: Kunio-kun Original release date(s): JP: July 29, 1994 | Notes: Nekketsu! Beach Volley da yo: Kunio-kun (熱血！ビーチバレーだよ くにおくん) is the last Kunio game for Game Boy. |
| Kunio no Nekketsu Dodgeball Densetsu Original release date(s): 1996 | Release years by system: 1996 – Neo Geo |
| Kunio no Nekketsu Dodgeball Densetsu Original release date(s): 1996 | Notes: Kunio no Nekketsu Dodgeball Densetsu (くにおの熱血闘球伝説), known in English as Super Dodge Ball is the final Kunio game released by Technōs Japan before the company went out of business. The game was never formally released in Japan and only saw limited release as an MVS-only Neo-Geo release in North America. Co-published and co-distributed with SNK. |
| Downtown Nekketsu Monogatari EX (ダウンタウン熱血物語 EX) Original release date(s): JP: March 5, 2004 | Release years by system: 2004 – Game Boy Advance |
| Downtown Nekketsu Monogatari EX (ダウンタウン熱血物語 EX) Original release date(s): JP: March 5, 2004 | Notes: The first Kunio game produced by Million. Remake of Downtown Nekketsu Story. Released in North America as River City Ransom EX. |
| Kunio-kun Nekketsu Collection 1 (くにおくん熱血コレクション 1) Original release date(s): JP: August 25, 2005 | Release years by system: 2005 – Game Boy Advance |
| Kunio-kun Nekketsu Collection 1 (くにおくん熱血コレクション 1) Original release date(s): JP: August 25, 2005 | Notes: 2-in-1 compilation which includes the Famicom versions of Nekketsu High School Dodgeball Club and Nekketsu! Street Basketball. |
| Kunio-kun Nekketsu Collection 2 (くにおくん熱血コレクション 2) Original release date(s): JP: October 27, 2005 | Release years by system: 2005 – Game Boy Advance |
| Kunio-kun Nekketsu Collection 2 (くにおくん熱血コレクション 2) Original release date(s): JP: October 27, 2005 | Notes: 2-in-1 compilation which includes the Famicom versions of Nekketsu High School Dodgeball Club: Soccer Story and Downtown Nekketsu March. |
| Kunio-kun Nekketsu Collection 3 (くにおくん熱血コレクション 3) Original release date(s): JP: February 16, 2006 | Release years by system: 2006 – Game Boy Advance |
| Kunio-kun Nekketsu Collection 3 (くにおくん熱血コレクション 3) Original release date(s): JP: February 16, 2006 | Notes: 2-in-1 compilation which includes the Famicom versions of Downtown Special and Nekketsu Hockey Club. |
| River City Dodge Ball All Stars!! Original release date(s): 2007 | Release years by system: 2007 – Microsoft Windows |
| River City Dodge Ball All Stars!! Original release date(s): 2007 | Notes: Independently published Dodge Ball game developed by Miracle Kidz, a dōjin group formed by Mitsuhiro Yoshida and Hiroyuki Sekimoto, the original game designers of River City Ransom and most of the other Famicom Kunio games. The Japanese title is Downtown Dodgeball da yo Zen'in Shūgō!! (ダウンタウン ドッジボールだよ全員集合!!, "It's Downtown Nekketsu Dodgeball, Assemble Everyone!!"). Trial downloads (in Japanese and English) are available on Miracle Kidz' official site. |
| Super Dodgeball Brawlers Original release date(s): JP: March 19, 2008 | Release years by system: 2008 – Nintendo DS |
| Super Dodgeball Brawlers Original release date(s): JP: March 19, 2008 | Notes: Released in Japan as Chō Nekketsu Kōkō Kunio-kun Dodgeball Bu (超熱血高校くにおくんドッジボール部, Super Nekketsu High School Kunio's Dodgeball Club). Super Dodge Ball sequel developed by Arc System Works. |
| Nekketsu Dodgeball Bu i (熱血ドッジボール部i) Original release date(s): JP: March 25, 2008 | Release years by system: 2008 – i-mode |
| Nekketsu Kōkō! Kunio-kun Online (熱血高校！ くにおくん オンライン) Original release date(s): 2008 (closed), October 22, 2010 | Release years by system: 2008 – Microsoft Windows |
| Nekketsu Kōkō! Kunio-kun Online (熱血高校！ くにおくん オンライン) Original release date(s): 2008 (closed), October 22, 2010 | Notes: Online game developed by Windysoft which began closed beta testing in 2008 until October 22, 2010. |
| Downtown Smash Dodgeball Original release date(s): JP: August 25, 2009NA: August 25, 2009 | Release years by system: 2009 – Xbox 360 |
| Downtown Smash Dodgeball Original release date(s): JP: August 25, 2009NA: August 25, 2009 | Notes: Released in Japan as Downtown Gekitotsu Dodgeball!, and the second Dodge Ball game developed by Miracle Kidz. |
| River City Super Sports Challenge Original release date(s): JP: February 4, 2010NA: October 12, 2010 | Release years by system: 2010 – Nintendo DS |
| River City Super Sports Challenge Original release date(s): JP: February 4, 2010NA: October 12, 2010 | Notes: Released in Japan as Kunio-kun no Chō Nekketsu! Daiundōkai (くにおくんの超熱血! 大運動会). A follow-up to Downtown Nekketsu March was developed by Arc System Works, but the game does not follows the plot of its predecessors. Instead, the game is likely a new storyline than a sequel. This is also the first Kunio game to features Mission mode. |
| River City Soccer Hooligans Original release date(s): JP: May 27, 2010NA: June 9, 2010 | Release years by system: 2010 – Nintendo DS |
| River City Soccer Hooligans Original release date(s): JP: May 27, 2010NA: June 9, 2010 | Notes: Released in Japan as Kunio-Kun no Chō Nekketsu! Soccer League Plus – World Hyper Cup Hen (くにおくんの超熱血! サッカーリーグぷらすワールド・ハイパー・カップ編). A follow-up to Nekketsu High School Dodgeball Club: Soccer Story (known as Nintendo World Cup in internationally), although the game is not a direct sequel. Instead, it was continuing from River City Super Sports Challenge, and that Michael Tobioka returns (along with Stanislav and Sierra). |
| Downtown Nekketsu Dodgeball (ダウンタウン熱血どっじぼーる) Original release date(s): JP: July 12, 2011 | Release years by system: 2011 – WiiWare |
| Downtown Nekketsu Dodgeball (ダウンタウン熱血どっじぼーる) Original release date(s): JP: July 12, 2011 | Notes: The third Dodge Ball game developed by Miracle Kidz. Unlike the first two Dodge Ball games, Million had involvement in the development of this game. |
| Nekketsu Kōha Kunio-Kun Special Original release date(s): JP: December 15, 2011KOR: September 14, 2012 | Release years by system: 2011/2012 – Nintendo 3DS |
| Nekketsu Kōha Kunio-Kun Special Original release date(s): JP: December 15, 2011KOR: September 14, 2012 | Notes: A remake of Nekketsu Renegade Kunio-Kun to celebrate the franchise's 25th anniversary. The game features characters from the Nekketsu Renegade, Nekketsu High School and Downtown Nekketsu series in their Downtown Nekketsu rendition. The Double Tiger Brothers from Nekketsu Fighting Legend, are also featured. |
| Riki Densetsu Original release date(s): JP: December 12, 2012 | Release years by system: 2012 – Nintendo 3DS |
| Riki Densetsu Original release date(s): JP: December 12, 2012 | Notes: Riki Densetsu (りき伝説, Legend of Riki) is a Kunio-kun spin-off starring Kunio's rival/partner Riki as the main character. It is also the second game not to feature Kunio as the main character. |
| River City: Tokyo Rumble Original release date(s): JP: August 8, 2013NA: September 27, 2016EU: September 27, 2016 | Release years by system: 2013/2016 – Nintendo 3DS |
| River City: Tokyo Rumble Original release date(s): JP: August 8, 2013NA: September 27, 2016EU: September 27, 2016 | Notes: Released in Japan as Nekketsu Kōha Kunio-Kun SP: Rantō Kyōsōkyoku (熱血硬派くにおくんSP 乱闘協奏曲, Hot-Blooded Tough Guy Kunio SP: Brawl Concerto), it would later be released in other regions by Natsume Inc. |
| River City: Knights of Justice Original release date(s): JP: April 30, 2014 NA: June 20, 2017EU: June 20, 2017 | Release years by system: 2014/2017 – Nintendo 3DS |
| River City: Knights of Justice Original release date(s): JP: April 30, 2014 NA: June 20, 2017EU: June 20, 2017 | Notes: Released in Japan as Nekketsu Mahō Monogatari (熱血魔法物語, Hot-Blooded Magic Story), this is a spin-off featuring characters from Downtown Nekketsu Story in a fantasy RPG setting. It was only released as a downloadable eShop title. |
| Kunio-Kun no Nekketsu Street Original release date(s): JP: March 26, 2015 | Release years by system: 2015 – Android, iOS |
| Downtown Nekketsu Jidaigeki Original release date(s): JP: May 28, 2015 | Release years by system: 2015 – Nintendo 3DS |
| Downtown Nekketsu Jidaigeki Original release date(s): JP: May 28, 2015 | Notes: A follow-up to Downtown Special: Kunio-kun's Historical Period Drama!. |
| River City Super Sports Challenge ~All Stars Special~ Original release date(s): JP: March 5, 2015NA: October 28, 2015 | Release years by system: 2015 – PlayStation 3, Microsoft Windows |
| River City Super Sports Challenge ~All Stars Special~ Original release date(s): JP: March 5, 2015NA: October 28, 2015 | Notes: Released in Japan as Downtown Nekketsu Kōshinkyoku: Soreyuke Daiundōkai ~All Star Special~, it is a follow-up to Downtown Nekketsu March and River City Super Sports Challenge. It's published by H2 Interactive outside Japan. Outside of Asia it was only released as a downloadable title. |
| River City: Rival Showdown Original release date(s): JP: October 27, 2016NA: November 21, 2017EU: November 21, 2017 | Release years by system: 2016/2017 – Nintendo 3DS 2023 - Nintendo Switch, PlayStation 4, Microsoft Windows (Steam) |
| River City: Rival Showdown Original release date(s): JP: October 27, 2016NA: November 21, 2017EU: November 21, 2017 | Notes: Released in Japan as Downtown Nekketsu Monogatari SP, it is a remake of Downtown Nekketsu Story to celebrate the franchise's 30th anniversary. It also includes a fighting game called Fighting of Double Dragon (Double Dragon Duel in the English version). The 3DS version was released outside Japan by Natsume Inc. |
| Kunio-kun Nekketsu Complete: Famicom Hen Original release date(s): JP: December 8, 2016 | Release years by system: 2016 – Nintendo 3DS |
| Kunio-kun Nekketsu Complete: Famicom Hen Original release date(s): JP: December 8, 2016 | Notes: A compilation of 11 classic Kunio Famicom games: Nekketsu Renegade Kunio-kun, Nekketsu High School Dodgeball Club, Downtown Nekketsu Story, Nekketsu High School Dodgeball Club: Soccer Story, Downtown Nekketsu March, Kunio-kun's Historical Period Drama!, Go Go! Nekketsu Hockey Club, Surprise! Nekketsu New Records: The Distant Gold Medal, Nekketsu Fighting Legend, Kunio-kun's Nekketsu Soccer League, and Nekketsu! Street Basketball. |
| River City Melee: Battle Royal Special Original release date(s): JP: December 26, 2016NA: March 28, 2017EU: March 28, 2017 | Release years by system: 2016/2017 – PlayStation 4, Microsoft Windows |
| River City Melee: Battle Royal Special Original release date(s): JP: December 26, 2016NA: March 28, 2017EU: March 28, 2017 | Notes: Released in Japan as Downtown Rantō Kōshinkyoku: Kachinuki Kakutō SP (ダウンタウン乱闘行進曲 かちぬきかくとうSP, Downtown Brawl March: Win Through Fighting SP), it is a follow-up to the Kōshinkyoku / Super Sports Challenge series. It is published by H2 Interactive outside Japan. It was released as a physical copy in North America by Limited Run Games, with a cover inspired by the River City Ransom cover. |
| River City Ransom: Underground Original release date(s): WW: February 17, 2017 | Release years by system: 2017 – Linux, MacOS, Microsoft Windows (Steam, GOG.com) |
| River City Ransom: Underground Original release date(s): WW: February 17, 2017 | Notes: Released as Downtown Nekketsu Monogatari Underground (ダウンタウン熱血物語アンダーグラウンド) in Japan. Developed by Conatus Creative. |
| Double Dragon & Kunio-kun Retro Brawler Bundle Original release date(s): JP: December 20, 2018WW: February 20, 2020 | Release years by system: 2018/2020 – Nintendo Switch, PlayStation 4, Xbox One TBA - Microsoft Windows (Steam) |
| Double Dragon & Kunio-kun Retro Brawler Bundle Original release date(s): JP: December 20, 2018WW: February 20, 2020 | Notes: Released as Kunio-kun: The World Classics Collection in Asia. A compilation of classic Kunio Famicom games, it contains the 11 games from Kunio-kun Nekketsu Complete: Famicom Hen as well as the western versions of Renegade, Super Dodge Ball, River City Ransom, Crash 'n' the Boys: Street Challenge, Double Dragon, Double Dragon II, and Double Dragon III. Online play has been added to all of these titles. |
| River City Girls Original release date(s): WW: September 5, 2019 | Release years by system: 2019 – Nintendo Switch, PlayStation 4, Xbox One, Microsoft Windows (Steam, GOG.com) 2020 – Amazon Luna 2022 – PlayStation 5 2023 – Android |
| River City Girls Original release date(s): WW: September 5, 2019 | Notes: Released in Japan as Nekketsu Kōha Kunio-kun Gaiden Ribā Shitī Gāruzu (熱血硬派くにおくん外伝 River City Girls(リバーシティガールズ), "Hot-Blooded Tough Guy Kunio Side-Story River City Girls"). Features Kyoko and Misako as playable characters, rescuing Kunio and Riki. Developed by WayForward under supervision from Arc System Works. It was released as a physical copy in Asia, and in North America by Limited Run Games. |
| River City Melee Mach!! Original release date(s): WW: October 10, 2019 | Release years by system: 2019 – Nintendo Switch, PlayStation 4, Microsoft Windows (Steam) |
| River City Melee Mach!! Original release date(s): WW: October 10, 2019 | Notes: Released in Japan as Downtown Rantō Kōshinkyoku Mach (ダウンタウン乱闘行進曲マッハ, Downtown Brawl March Mach), it is a brawling game that is an updated version of Kachinuki Kakutō SP. |
| Stay Cool, Kobayashi-san! A River City Ransom Story Original release date(s): WW: November 7, 2019 | Release years by system: 2019 – Nintendo Switch, PlayStation 4, Xbox One, Microsoft Windows (Steam) |
| Stay Cool, Kobayashi-san! A River City Ransom Story Original release date(s): WW: November 7, 2019 | Notes: Nekketsu Kōha Kunio-kun Gaiden Ikasuze! Kobayashi-san (熱血硬派くにおくん外伝 イカすぜ！小林さん, Hot-Blooded Tough Guy Kunio Side Story: Stay Cool, Kobayashi-san!) is a spin-off starring Masao Kobayashi from Downtown Nekketsu Story, taking place after that title. |
| River City Saga: Three Kingdoms Original release date(s): JP: December 16, 2021WW: July 21, 2022 | Release years by system: 2021 - Nintendo Switch 2022 - PlayStation 4, Microsoft Windows (Steam) |
| River City Saga: Three Kingdoms Original release date(s): JP: December 16, 2021WW: July 21, 2022 | Notes: Released in Japan as Kunio-kun no Sangokushi da yo Zeiin Shūgō! (くにおくんの三国志だよ 全員集合！, It's Kunio's Records of the Three Kingdoms: Everyone Assemble!), it sees familiar characters such as Guan Yu (Kunio), Liu Bei (Gouda), and Zhang Fei (Godai) run-amok in the world of Romance of the Three Kingdoms. |
| River City Girls 2 Original release date(s): JP: December 1, 2022WW: December 15, 2022 | Release years by system: 2022 – Nintendo Switch, PlayStation 4, PlayStation 5, Windows, Xbox One, Xbox Series X/S |
| River City Girls 2 Original release date(s): JP: December 1, 2022WW: December 15, 2022 | Notes: Released in Japan as Nekketsu Kōha Kunio-kun Gaiden Ribā Shitī Gāruzu 2 (熱血硬派くにおくん外伝 River City Girls(リバーシティガールズ) 2, "Hot-Blooded Tough Guy Kunio Side-Story River City Girls 2"). Developed by WayForward under supervision from Arc System Works. |
| River City Saga: Three Kingdoms Next Original release date(s): WW: November 5, 2024 | Release years by system: 2024 – Nintendo Switch, PlayStation 4, Microsoft Windows (Steam) Released in Japan as Downtown Special Kunio-kun no Sangokushi da yo Man'in Onrei!! (ダウンタウンスペシャル くにおくんの三国志だよ 満員御礼！！, Downtown Special: It's Kunio's Records of the Three Kingdoms: Full House, Thank You!!). A follow up to River City Saga: Three Kingdoms. |
| Super Technos World: River City & Technos Arcade Classics Original release date(s): WW: April 24, 2025 | Release years by system: 2025 – Nintendo Switch, PlayStation 5, Windows (Steam) |
| Super Technos World: River City & Technos Arcade Classics Original release date(s): WW: April 24, 2025 | Notes: Released in Japan as Technos The World: Kunio-kun & Arcade Collection (テクノス ザ・ワールド くにおくん & アーケードコレクション). A compilation of classic Kunio Super Famicom and Arcade games: River City Renegade, Kunio's Dodgeball Time, C'mon Guys!, Downtown River City Baseball Story ~Play Ball, Kunio!~, Kunio's Oden, Super Dodge Ball for Neo Geo, Xain'd Sleena, China Gate, both versions of The Combatribes, Shadow Force, SugoroQuest++ -Dicenics-, and DunQuest. SugoroQuest++ -Dicenics- and DunQuest are not localized in English. |

## Characters

The following is a list of characters appearing in most of the games, ordered by the games where they first appear.

### Main characters

* Kunio (くにお) (full name Kunio Fu'unji (風雲児 くにお, Fu'unji Kunio) in live-action series) – the protagonist of the series, Kunio serves as the guardian of Nekketsu High School against rival schools and is the captain of his school's Dodgeball team, although he excels at other sports (such as soccer and ice hockey). Kunio first appears in the original Nekketsu Renegade Kunio-kun, where he is described as a second year student at Nekketsu High School (in the Downtown Nekketsu sub-series, he is described as a third year student, establishing a loose continuity between later games). His surname is never revealed, but the live-action television series lists his surname as Fu'unji. In some games (such as Nekketsu Hockey Club and Baseball Monogatari), he is the only student at Nekketsu to wear an all-white uniform, while at other games everyone at Nekketsu wears white. In the localized versions, he is known as a nameless vigilante in Renegade (Mr. K in the NES version), Sam in Super Dodge Ball, Alex in River City Ransom and some of its ports, and "Crash" Cooney in Crash 'n the Boys: Street Challenge. While the protagonist of the series, Kunio also later became Technōs Japan's main mascot, appearing on the company's logo in several games and television commercials. Kunio is voiced by Ryō Horikawa in most of the games, Hiroyuki Satō in Dodgeball Bu: CD Soccer Hen, and Satoru Murakami in Stay Cool, Kobayashi-san!. Takurō Ōno plays Kunio in the live-action series.
* Riki Samejima (鮫島 力, Samejima Riki) – often described as Kunio's eternal rival, Riki is the guardian of Hanazono High School and the second most recurring character in the series. In the original Nekketsu Renegade Kunio-kun, Riki appears as the first stage boss and serves as captain of the Hanazono dodgeball team. Downtown Nekketsu Story was the first game where Riki teams-up with Kunio (although chronologically speaking, Shodai comes first). Since then, Riki's relationship with Kunio evolved from enmity to close friendship, and he appears in the later beat-em-ups as a secondary playable character. Riki's birthdate is on May 5 and is repeating his third year in the Downtown Nekketsu sub-series. In the localized versions, he is known as Jack in Renegade and Super Dodge Ball, Ryan in River City Ransom, and Crusher in Crash 'n the Boys: Street Challenge. Riki is voiced by Nobutoshi Canna in PC Engine version of Downtown Nekketsu Monogatari and Masaaki Okura in Nekketsu Dodgeball Densetsu. In the live-action series, he is played by Yukihiro Takiguchi.
* Misako (みさこ) – a Nekketsu High student and manager of its Soccer Club, introduced in Nekketsu High School Dodge Ball Club: Soccer Story (Nintendo World Cup) when she turns to Kunio for help after some of her teammates got hospitalized from food poisoning. In Kunio-tachi no Banka, she is Kunio's fighting partner and one-time love interest. She is one of the two protagonists of River City Girls. Misako is voiced by Yumi Tōma in Dodgeball Bu: CD Soccer Hen, Kayli Mills in River City Girls, and played by Kaho Takashima in the live-action series.
* Kyōko (きょうこ) - a Hanazono High student and Misako's best friend, introduced in Kunio-tachi no Banka as Riki's fighting partner and one-time love interest. She is one of the two protagonists of River City Girls, where she is voiced by Kira Buckland.

### Sanwakai

The Sanwakai (三和会) are a ruthless Yakuza gang that serve as the series antagonists:
* Sabu: The Sanwakai head, he is introduced as a gun-wielding final boss in the original Nekketsu Renegade Kunio-kun. He returns as the main antagonist in Kunio-tachi no Banka, where he recruits his adiopted son Ken to frame Kunio for a hit and run accident. In Nekketsu Kōha Kunio-Kun SP: Rantō Kyōsōkyoku (River City: Tokyo Rumble), Sabu orchestrates a plan to conquer Tokyo and get revenge on Kunio for defeating him in the past by establishing the "Tokyo Lion Alliance". He is also a playable character in the Neo Geo version of Super Dodge Ball. Sabu is the only character not to change his name, nor his appearance, in Renegade. Sabu is voiced by Yukimasa Kishino in Nekketsu Dodgeball Densetsu. In the River City Girls games, he is revealed to have a daughter named Sabuko and becomes the antagonist of River City Girls 2.
* Ken: Sabu's adopted son who is introduced in Kunio-tachi no Banka, helping his father with his resemblance to Kunio to frame the latter for a hit-and-run accident that landed the real Kunio and Riki in jail before they escape and clear their names. In the River City Girls games, where he is voiced by Todd Haberkorn, Ken is hostile towards his sister Sabuko while helping their father take over the town and make the protagonists' lives miserable.
* Sabuko: The daughter of Sabu who is introduced in River City Girls, a martial artist armed with a katana and magic. Sabuko initially leads the Sanwakai during her father's imprisonment until he escapes from the prison upon learning that she lost to Misako and Kyōko.

### Nekketsu Renegade Kunio-kun (Renegade)

* Hiroshi (ひろし) – Hiroshi is Kunio's best friend in the original Nekketsu Renegade Kunio-kun game. He enrolls into Nekketsu High School during his second year and gets picked on a lot by bullies. He becomes fast friends with Kunio after Kunio defends him from his tormentors. In the arcade version of Nekketsu Renegade Kunio-kun, he is beaten by a different gang at the beginning of each time, whereas in the Famicom he is kidnapped by Sabu (with no explanation given). In addition to the Nekketsu Renegade sub-series, he appears as a member of the Dodgeball Club in Dodgeball Club, as well as in Soccer Story and Hockey Club, where he shares the same sprite as the Sonokawa character from the Downtown Nekketsu sub-series (until he receives a new sprite in Kunio-kun Special). Actor Kōsuke Hatakeyama plays Hiroshi in the live-action series. He is the only character not to appear in the American versions of the Renegade games.
* Shinji – the leader of a bōsōzoku gang known as "Yokohama Funky" in Nekketsu Renegade Kunio-kun (where he is the second stage boss) and the "Blue Emperor" in Kunio-tachi no Banka (where he is a recurring boss). He also appears as a playable character in the Neo Geo version of Super Dodge Ball as well as in River City: Tokyo Rumble. His counterpart in Renegade is named Joel. Shinji is voiced by Hisao Egawa in Nekketsu Dodgeball Densetsu.
* Misuzu (みすず) – a giant sukeban from the all-girl Taiyō Academy, first appearing as a stage 3 boss in Nekketsu Renegade Kunio-kun. She reappears as Sabu's bodyguard in Kunio-tachi no Banka, a stage 1 boss in River City Girls, and is a playable character in the Neo Geo version of Super Dodge Ball and in River City: Tokyo Rumble. Her counterpart in Renegade is named Kim. Misuzu is voiced by Keiko Yamamoto in Nekketsu Dodgeball Densetsu. Shu Hamada plays Misuzu in the live-action series.
* Tadokoro (田所) – an original character from the live-action series. A student of Nekketsu High for many decades, he leads a small group of delinquents who constantly harass Hiroshi until they are all defeated by Kunio. He is played by comedian Donpei Tsuchihara.

### Nekketsu High School Dodge Ball Club (Super Dodge Ball)

* Shinichi
* Kōji – in Kunio-kun Special, Koji is the captain of Nekketsu High's Soccer Team, but would later surrender his position to Kunio. He reappears in Shodai Nekketu Kouha Kunio-kun as among the students visiting Osaka.
* Mitsuhiro
* Heilman – captain of the Iceland team.
* Njomo – captain of the Kenya team.
* Moldoff – captain of the USSR team who debuted in the Famicom version of Dodgeball Club.

### Downtown Nekketsu Story (River City Ransom)

* Mami Shimada (島田 真美, Shimada Mami) (Cyndi in River City Ransom) – Mami is a 2nd Year High School Student of Hanazono High and its team's cheerleader. In River City Ransom, she is Riki's girlfriend who is kidnapped by Yamada when he and his gang took over River City. She also serves as a nemesis of Kyoko in River City Girls, voiced by Sarah Anne Williams.
* Kazumi Hasebe (長谷部 和美, Hasebe Kazumi) (Roxy in River City Ransom) – Hasebe is a 3rd Year Student Vice President of Reihou Academy and Yamada's girlfriend, warning Kunio and Riki of the Hattori Twins. In Downtown Nekketsu Baseball Monogatari, she plays as the sports commentator for the game. It is said that she, Kunio, and Yamada used to attend the same school together before Kunio transferred to Nekketsu High. She also serves as Misako's nemesis in River City Girls, voiced by Cristina Valenzuela.
* Kaoru Sonokawa (園川 薫, Sonokawa Kaoru) (Harry in River City Ransom, Conan in River City Ransom EX) – 2nd Year student of Senridai High School. In an effort to make a name for himself and his school, he attacks Hanazono High, but is constantly defeated by Riki. In other Kunio-kun games, he plays as Kunio's sidekick.
* Tsuneo Kamijō (上條 恒男, Kamijō Tsuneo) and Noriyuki Yamamoto (山本 憲之, Yamamoto Noriyuki) (Benny and Clyde in River City Ransom) – co-leaders of Kagemura Academy.
* Yasuo Sawaguchi (沢口 靖夫, Sawaguchi Yasuo) (Moose in River City Ransom) – self-proclaimed No. 2 man of Hakutaka Industry High School. He is the game's first boss.
* Naritaka Nishimura (西村 成孝, Nishimura Naritaka) (Rocko in River City Ransom, Baldy in Crash 'n the Boys: Street Challenge) – the No. 1 man of Hakutaka Industries High School. Despite his plump size and wearing large glasses, Nishimura is a formidable fighter.
* Masao Kobayashi (小林 政男, Kobayashi Masao) (Thor in River City Ransom, Monty in Crash 'n the Boys: Street Challenge) – leader of the "Four Devas" (Zombies in the English version), a group of some of the most feared fighters from Reihou Academy under Onizuka. He is the main character in spin-off Stay Cool, Kobayashi-san!, voiced by Ryūichi Kijima.
* Shun Mochizuki (望月 駿, Mochizuki Shun) (Turk in River City Ransom, Wheels in Crash 'n the Boys: Street Challenge) – one of the "Four Devas" of Reihou Academy, he is known for his quickness in combat.
* Kiyofumi Taira (平 清文, Taira Kiyofumi) (Mojo in River City Ransom) – one of the "Four Devas" of Reihou Academy.
* Tadashi Kinoshita (木下 忠, Kinoshita Tadashi) (Blade in River City Ransom) – one of the "Four Devas" of Reihou Academy, he also controls Hakutaka Industries High School.
* Tsuyoshi Gōda (豪田 剛, Gōda Tsuyoshi) (Ivan in River City Ransom, Sprecks in Crash 'n the Boys: Street Challenge) – student of Horyou High School, he guards the entry gates of Reihou Academy. Although a tough fighter, he has a kind heart and has a sense of justice.
* Takashi Onizuka (鬼塚 崇, Onizuka Takashi) (Otis in River City Ransom) – guards the Gymnasium of Reihou Academy. He is the former Student President of Reihou Academy and leads the "Four Devas".
* Susumu Godai (五代 奨, Godai Susumu) (Tex in River City Ransom, Clint in Crash 'n the Boys: Street Challenge) – boss of Tanihana High School, he guards the school hallways leading to the floor where Mami is held. He admires Goda's persona. In other Kunio-kun games, he is a friend to both Kunio and Riki.
* Ryūichi Hattori (服部 竜一, Hattori Ryūichi) and Ryūji Hattori (服部 竜二, Hattori Ryūji) (Randy and Andy in River City Ransom) – the Hattori Brothers, they are also known as the "Double Dragon Twins" due to not just their resemblance to Billy and Jimmy Lee, the protagonists of the Double Dragon games (being twin brothers, having the same special moves, and having the Double Dragon theme song played whenever they appeared), but also because of their names (Ryuichi and Ryuji can be translated as "First Dragon" and "Second Dragon"). They are the strongest fighters of Reihou Academy and are the fiercest opponents of Kunio and Riki. Aside from River City Ransom, the twins appeared in other Kunio games either as bosses or representing Reihou Academy as co-team captains.
* Taiki Yamada (山田 大樹, Yamada Taiki) (Slick/Simon in River City Ransom, Skip in Crash 'n the Boys: Street Challenge) – the main antagonist of River City Ransom and former Student President of Reihou Academy, revealed to be Kunio's timid childhood friend before transferring schools. Yamada desires revenge on Kunio for overshadowing him and having the attention of Hasebe, whom he has a crush on. Having dabbled in the dark arts, he kidnaps Mami in a scheme of getting rid of Kunio and replacing him as the number one delinquent and the franchise's new main character. In other games, Yamada plays more of a comical sidekick to Todou and the stage 2 boss of River City Girls. Yamada is voiced by Wataru Takagi in the first two Downtown Nekketsu games for the PC Engine Super CD-ROM$^2$.

### Nekketsu High School Dodge Ball Club: Soccer Story (Nintendo World Cup)

* Takashi (たかし) – goalkeeper for Nekketsu High's Soccer Team, he and Misako sought Kunio's help in leading the team to the championship.
* Masa (まさ) – a 9th member of Nekketsu High's Soccer Team.
* Gen'ei (げんえい) – the last member of Nekketsu High's Soccer Team, who joins Kunio and his team after they won in semi-final match. He reappears in Shodai Nekketsu Kouha Kunio-kun as among the students visiting Osaka.
* Takayuki Yoritsune (よりつね たかゆき) – captain of Hattori Academy's Soccer Team from the semi-final match. He, and other team captains from the game, would later join Kunio to represent Japan in Nekketsu Soccer League. His handsome looks and superb skill has made him popular among female students. The same guy later returns in Super Sports Challenge as an unlocking team and again, reprises his role as the member of Nekketsu FC team in Soccer Hooligans. He also appears in Kunio-kun Special.

### Downtown Nekketsu March: Super-Awesome Field Day!

* Mamoru Tōdō (藤堂 護, Tōdō Mamoru) (Todd in Crash 'n the Boys: Street Challenge, Titus in River City Ransom EX) – the current Student President of Reihou Academy. A man of extreme wealth, he has a huge dislike for Kunio and makes attempts to humiliate him in Downtown Nekketsu Kōshinkyoku, and Crash n' The Boys Street Challenge. He is Yamada's superior after the latter surrendered his title of Student President to him in the aftermath of River City Ransom. Tōdō is voiced by Hikaru Midorikawa in Downtown Nekketsu Kōshinkyoku (PC Engine Super CD-ROM$^2$ version).
* Sanjūrō Sugata (姿 三十朗, Sugata Sanjūrō) (Cheese in Crash n' The Boys: Street Challenge, Gary in River City Ransom EX) – 2nd Year Student of Nekketsu High. Like Hiroshi, he is a friend of Kunio and looks up to him for inspiration. He becomes the protagonist in Downtown Nekketsu Baseball Monogatari as the leader of the Nekketsu High Baseball team.
* Haruka Nanase (七瀬 遥, Nanase Haruka) – 2nd Year Student of Nekketsu High, he is Sugata's classmate. In Baseball Monogatari, he becomes the vice-captain of the Nekketsu High Baseball team when Sugata replaces Tachibana as team captain.
* Noboru Takamine (鷹峰 昇, Takamine Noboru) – Freshman from Nekketsu High and member of the school's Judo club.
* Kenichi Morimoto (森本 健一, Morimoto Kenichi) – another Freshman from Nekketsu High and a member of the school's Drama club.
* Hayato Ichijou (一条 勇人, Ichijou Hayato)
* Satomi Momozono (桃園 里美, Momozono Satomi) – 2nd Year Student of Nekketsu High, she is the school's cheerleader and is also a childhood friend of Sugata. Like many of the franchise's female characters, she too has an interest in Kunio. She is a playable character in Nekketsu! Beach Volley da yo: Kunio-kun.
* Hikaru Saotome (五月女 光, Saotome Hikaru) (Nate in Crash n' The Boys: Street Challenge) – 2nd Year Student of Hanazono High, he is known for his handsome looks and is Sugata's rival.
* Tōru Maeda (前田 亨, Maeda Tōru) (Rick in River City Ransom EX) – 3rd Year student of Hanazono High and former rival of Riki.
* Mitsuaki Yoshino (吉野 光明, Yoshino Mitsuaki) (Dove in Crash n' The Boys: Street Challenge)
* Shoji Washio (鷲尾 修二, Washio Shoji)
* Kouichi Shimizu (清水 浩一, Shimizu Kouichi)
* Ryōma Hayasaka (早坂 良麻, Hayasaka Ryōma) (Knors in Crash n' the Boys: Street Challenge, Jesse in River City Ransom EX) – a student of Reihou Academy and a close friend of Shun Mochizuki.
* Kyosuke Otonashi (音無 京助, Otonashi Kyosuke)
* Shizuka Aihara (藍原 静, Aihara Shizuka) – 2nd Year student of Reihou Academy and is the team's Cheerleader. She has an older sister named Megumi, who is an art teacher at Nekketsu High.
* Jūzō Kumada (熊田 重蔵, Kumada Jūzō) (Barns in Crash n' The Boys Street Challenge, Ted in River City Ransom EX) – a member of the Judo club from Torashima Industries IV High School, he is in his 3rd Year.
* Takeshi Hayami (速水 武士, Hayami Takeshi) (Milo in Crash n' The Boys: Street Challenge) – 2nd Year student of Hayabusa High.
* Yūko Kirishima (霧島 裕子, Kirishima Yūko) – 2nd Year student of Horyo High and is the cheerleader of the School Alliance team. She has a close relationship with the Gouda siblings.

### Shodai Nekketsu Kōha Kunio-kun

* Yoshihiro (よしひろ) – the main antagonist of Shodai, an exchange student from Osaka studying at Nekketsu High, he invites Kunio and the gang to Osaka as part of a school trip during their second year. After Hiroshi was beaten by the students of Union at early in the game, Yoshihiro joins the Osaka Alliance to avenge him, but it is later revealed that Yoshihiro is a new leader of Osaka Student Union and the mastermind behind who obey the gang to dominate and taking over Japan. After he betrayed both Nekketsu High and Osaka Alliance, he is also revealed to be responsible for locked Union's old leader and orders Urabe (from Ebisu High) to capture Miho during the sewer basement.
* Miho Yanagisawa – 2nd year student of Sakurakyou High School. A friend of Hiroshi's, she warns Kunio of the Osaka Student Union, a gang of juvenile delinquents, and their plan to take over Japan.
* Masaki Yanagisawa – one of the four Osaka Student Union's heavenly kings, and Miho's older brother.

### Go Go! Nekketsu Hockey Club: Slip-and-Slide Madness

* Yōichi – the team captain of Nekketsu High's Hockey Team, he seeks Kunio's help in improving and strengthening the Hockey Team and win the championship. He also makes a cameo appearance in the opening intro of Nekketsu Kakutō Densetsu.
* Kaori – reporter for Nekketsu High's school newspaper, she provides reports of the Hockey Team's progress in the game and is secretly in love with Yoichi.
* Tooru – captain of Nekketsu High's Kendo Club.
* Youko – captain of the Yurikaoka Hockey Club as well as the Association of Magic. A hard working student, she is a good friend of Kunio and accepts the latter's challenge to a hockey match.
* Tobiyama (とびやま) – captain of the Daisetsuzan High School Hockey Club, he and his team fought against Team Nekketsu during the final match in Scenario Mode. His extraordinary skill allowed him to be drafted as a professional player for the Canadian Team. This character would later appear in Super Sports Challenge, and Kunio-Kun Special.

### Surprise! Nekketsu New Records! The Distant Gold Medal / Crash 'n The Boys: Street Challenge

* Johnny (ジョニー, Jonī) – student and captain of the Oklahoma High School team, he reappears in Nekketsu Dunk Heroes as one of the participants and as a friend to Kunio and Riki.
* Raphael (ラファエル, Rafaeru) – an African American student of the Oklahoma High School team and Johnny's co captain.
* Jimmy (ジミー, Jimī) – also a student of the Oklahoma High School team, he shares the same sprite and moveset as the Hattori Twins, though with a different color. In Super Sports Challenge, his design was completely different rather than shares as Hattori Twins. It is unknown if he is actually Jimmy Lee, one of the protagonists of Double Dragon.
* Kounosuke Todou – father of Mamoru Todou and President of the Toudou Group. Upon hearing of his son's defeat by Kunio, Kounosuke helped organize the tournament in Bikkuri Nekketsu Shin Kiroku.

### Nekketsu Fighting Legend

* Toraichi and Toraji – they head the tournament in Nekketsu Kakutou Densetsu waiting to fight the strongest opponents in the game. They are also called the "Double Tiger Brothers" and "Saber Tigers" because of them being both twins and wear Tiger Masks in combat. They later show up in Super Sports Challenge as the captains of Martial Arts team, and Kunio-kun Special. Before arrived in Modern-era, they also make a small cameo appearance in Kunio no Oden in the Vs. Mode screen.

### Downtown Nekketsu Baseball Monogatari

* Tatsumi Tachibana (立花 辰巳, Tachibana Tatsumi) – an honor student and a superb athlete, he is the team captain of Nekketsu High's Baseball team. An injury on his shoulder bars him from leading Nekketsu High to Japan's National High School Baseball Tournament. This serves as a catalyst for Sugata to take his place as team captain.
* Rika Asano (浅野 里佳, Asano Rika) – Rika is referred to by her given name. She is the team manager of Nekketsu High's Baseball team and is Tatsumi's girlfriend. News of Tatsumi's injury leaves her heartbroken and unable to fulfill her duties as team manager. This motivates Sugata, who has a crush on her, to lead the Nekketsu team in the baseball tournament.
* Kuniko Ashino (芦野 久仁子, Ashino Kuniko) (Shel in River City Ransom EX) – Kuniko is referred to by her given name. She takes over Rika's place as team manager of Nekketsu High's Baseball team. She is also Kunio's biggest fan and chases him whenever the opportunity arises. She has a rivalry with Hasebe.
* Kōjirō Murasaki (紫 小次朗, Murasaki Kōjirō) – 3rd Year student of Horyo Academy, his flowing violet hair and skills with the sword earned him the nickname "The Beautiful Swordsman". Gouda's sister, Saori, is in love with him.
* Raiji Tsuge (柘植 雷二, Tsuge Raiji) – 3rd Year student of Fukubu Academy, he is Murasaki's childhood friend as well as his rival in terms of skills with the sword. His skill in the martial arts also rivals that of the Hattori Twins.
* Tsukasa Mochizuki (望月司, Mochizuki Tsukasa) – Freshman student of Fukubu Academy, he is the younger brother of Shun Mochizuki, one of the bosses in River City Ransom.

### Downtown Nekketsu Monogatari EX (River City Ransom EX)

* Shō Himada (火間田 翔, Himada Shō) (Rex in River City Ransom EX) – a member of Torashima Industries IV High School's Cheerleading Club.
* Saori Gōda (豪田 砂織, Gōda Saori) (Abby in River City Ransom EX) – Saori is referred to by her given name. She is a younger sister of Tsuyoshi Gōda.
* Shōko (Jenny in River City Ransom EX)

### Kunio-kun no Chou Nekketsu! Daiundoukai

* Michael Tobioka – the founder of the Tobioka Conglomerate, who sends a challenging letter to Kunio after reading about him on the Internet. He later appears in Soccer Hooligans alongside Sierra and Stanislav.
* Tomorin (ともりん) – an idol working for Arc TV.
* Sierra (シエラ) – an aide of Michael Tobioka.
* Stanislav – a scientist working for Tobioka Conglomerate.

### Nekketsu Kōha Kunio-Kun Special

* Yuya & Toshio – students of Class 2-E from Nekketsu High, they are first seen bullying Hiroshi at the back of the school in the beginning of the game. After suffering defeat by Kunio twice, they seek help from Hanazono High.
* Madoka – Kunio's teacher from Nekketsu High.
* Kouchyo – principal of Nekketsu High.
* Wataru – the No.2 man of Hanazono High, he is approached by Yuya and Toshio who seek help in defeating Kunio.

### Riki Densetsu

* Sakata – 3rd Year Student of Hanazono High, serves as a subordinate of Riki.
* Megumi & Gonda – teachers of Hanazono High.
* Mikoto – a subordinate of Shinji and member of the Blue Emperor gang.
* Okada – leader of the "Mushamonzen" (武赦紋漸) gang consisting of 50 people, he is believed to be responsible for Riki's frame-up in the game.

### Nekketsu Kōha Kunio-Kun SP: Rantō Kyōsōkyoku (River City: Tokyo Rumble)

* Shirogane – member of the Tokyo Lion Alliance who holds the title "Silver Lion". He originally ran in Shinji's Blue Emperors until his close friend died in a motorcycle crash.
* Oda – member of the Tokyo Lion Alliance who holds the title "Demon Lion". A muscular man wearing a hockey mask, Oda does not talk much but lets his strength speak for itself.
* Benibayashi – member of the Tokyo Lion Alliance who holds the title "Rouge Lion". The only female leader, she uses her beauty and ballerina-trained movements to beguile enemies.
* Ukyo Azuma & Sakyo Azuma – members of the Tokyo Lion Alliance who hold the title "Twin Lions". They are identical twins (save for Ukyo's facial scar) who move and fight in perfect sync.
* Kaneda – member of the Tokyo Lion Alliance who holds the title "Gold Lion". A successful businessman with a love for fighting, he joined the Lion Alliance solely for personal amusement.
* Shigematsu – leader of the Tokyo Lion Alliance who holds the title "Ultra Lion", he plans to lead the Lion Alliance into ruling all of Tokyo.
* Lee – Sabu's older brother, who runs the Triads in Hong Kong, he and Sabu orchestrate a plan to get revenge on Kunio for his previous humiliation of the Sanwakai by establishing the Tokyo Lion Alliance.

### River City Girls series

* Hibari: A fashion designer who runs a clothing line in Uptown, she dons a Gothic-themed Kimono as her outfit and is the game's 3rd boss.
* Noize: A rock star who Kyoko befriended in the past and is the game's 5th boss. Her real name is Nozomi.
* Marian Kelly: A character from the Double Dragon series, a student and love interest of the martial twins William "Billy" Lee and James "Jimmy" Lee before she worked out to cease being their damsel in distress. She joins Misako and Kyōko after they snapped her out of the yakuza's brainwashing.
* Provie: A character originally introduced from River City Ransom: Underground, she attacks Misako and Kyōko after mistaking them as Sabu's henchmen and believing they kidnapped her friend Chris. After Misako and Kyōko defeat her and clear up the misunderstanding, Provie joins them to help free River City from the Yakuza.
* Tsuiko: An influencer that Sabu's gang paid to hack into Misako and Kyōko's accounts.
* Blaire: An anti-social witch that Sabu's gang paid to brainwash people into doing their dirty work.
* Primo: A famous celebrity chef hired by Sabu's gang to cook special food to mind control the students of River City High.

## Manga

A gag manga based on the video games was produced titled Ore wa Otoko Da! Kunio-kun (おれは男だ! くにおくん). The manga was illustrated by Kosaku Anakubo and was serialized in the monthly anthology CoroCoro Comic from 1991 to 1996, lasting 11 collected editions. Ore wa Otoko Da! was awarded the Shogakukan Manga Award for children's manga in 1995.