Question: What did the illustrator of a well-known manga starring Goku first achieve mainstream recognition for?

Context paragraphs:
Dragon Ball (manga): Dragon Ball (Japanese: ドラゴンボール , Hepburn: Doragon Bōru ) is a Japanese manga series written and illustrated by Akira Toriyama.  Originally serialized in "Weekly Shōnen Jump" magazine from 1984 to 1995, the 519 individual chapters were printed in 42 "tankōbon" volumes by the publisher Shueisha.  "Dragon Ball" was inspired by the Chinese novel "Journey to the West".  It initially had a comedy focus but later became an action-packed fighting series.  The story follows the adventures of Son Goku, from childhood to adulthood, as he trains in martial arts and explores the world in search of the seven orbs, known as Dragon Balls, which summon a wish-granting dragon when gathered.  Along his journey, Goku makes several friends and battles villains, many of whom also seek the Dragon Balls.

Goku: Son Goku (Japanese: 孫 悟空 , Hepburn: Son Gokū ) is a fictional character and main protagonist of the "Dragon Ball" manga series created by Akira Toriyama.  He is based on Sun Wukong, a main character in the classic Chinese novel "Journey to the West".  Goku first made his debut in "Dragon Ball" chapter #1 "Bulma and Son Goku" (ブルマと孫悟空 , Buruma to Son Gokū ) , originally published in Japan's "Weekly Shōnen Jump" magazine on December 3, 1984, as an eccentric, monkey-tailed boy who practices martial arts and possesses superhuman strength.  He meets Bulma and joins her on a journey to find the wish-granting Dragon Balls.

Takeshi Obata: Takeshi Obata (小畑 健 , Obata Takeshi , born February 11, 1969) is a Japanese manga artist that usually works as the illustrator in collaboration with a writer.  He first gained international attention for "Hikaru no Go" (1998–2003) with Yumi Hotta, but is better known for "Death Note" (2003–2006) and "Bakuman. " (2008–2012) with Tsugumi Ohba.  Obata has mentored several well-known manga artists, including Nobuhiro Watsuki of "Rurouni Kenshin" fame, "Black Cat" creator Kentaro Yabuki, and "Eyeshield 21" artist Yusuke Murata.

Piccolo (Dragon Ball): Piccolo (Japanese: ピッコロ , Hepburn: Pikkoro ) is a fictional character in the "Dragon Ball" manga series created by Akira Toriyama.  He is first seen as the reincarnation of the evil Piccolo Daimao in chapter #161 "Son Goku Wins!!"  (孫悟空勝つ!!  , Son Gokū Katsu!! )  , published in "Weekly Shōnen Jump" magazine on February 22, 1988, making him a demon and archrival of the protagonist Son Goku.  However, it is later revealed that he is a member of an extraterrestrial humanoid species called Namekians, those able to create the series' titular wish-granting Dragon Balls.  After losing to Goku, Piccolo decides to team up with him and his friends in order to defeat newer, more dangerous threats.  He also trains Goku's first child Gohan in martial arts, with the two forming a strong bond.

Miyako Maki: Miyako Maki (牧 美也子 , Maki Miyako , born July 29, 1935 in Kobe, Hyogo, Japan) is a former Japanese manga artist.  She made her professional debut in 1957 with "Haha Koi Warutsu" (母恋いワルツ ) .  In 1961 she married the well-known manga artist Leiji Matsumoto, after their marriage, they started collaborating on shōjo manga mixing photography and painting techniques.  She is the creator of Licca-chan, a popular Japanese doll.  She received the 1989 Shogakukan Manga Award for General for "Genji Monogatari", a Japanese manga version of Murasaki Shikibu's The Tale of Genji.

Dragon Ball: Advanced Adventure: Dragon Ball: Advanced Adventure (ドラゴンボール アドバンス アドベンチャー , Doragon Bōru Adobansu Adobenchā ) is a Game Boy Advance video game based on the Dragon Ball manga and anime series.  The game contains 30 playable characters (counting all modes in the game altogether), which is unusually large for a third-party game for a portable system.  It contains five modes of play.  The story of the game starts at the very the beginning of the series when Goku first met Bulma, and goes all the way up to the final battle against King Piccolo.  This game received an ESRB rating of Everyone 10+ because of some of the violence and language.

Monthly Comic Zero Sum: Monthly Comic Zero Sum (月刊コミックZERO-SUM , Gekkan Komikku Zero Samu ) is a manga magazine targeted towards the shoujo and josei readership demographic, published by Ichijinsha and launched in March 2002.  Its volumes usually contain over 600 pages and tackles a variety of genres, with well-known manga like "Saiyuki Reload", "Amatsuki", "07-Ghost" and "Loveless" often making appearances in its pages.  A special edition version, "Comic Zero Sum Zōkan Ward" launched in 2003 as a quarterly magazine, but has since shifted to a bimonthly issue as of 2008.

Nobuhiro Watsuki: Nobuhiro Watsuki (Japanese: 和月 伸宏 , Hepburn: Watsuki Nobuhiro , born May 26, 1970) is a Japanese manga artist.  He is best known for his samurai-themed series "Rurouni Kenshin: Meiji Swordsman Romantic Story" (1994–1999), which has over 70 million copies in circulation.  He has since written three more series, the western "Gun Blaze West" (2001), the supernatural "Buso Renkin" (2003–2005), and the horror manga "Embalming -The Another Tale of Frankenstein-" (2007–2015).  Watsuki has mentored several well-known manga artists, including "One Piece" creator Eiichiro Oda, Hiroyuki Takei of "Shaman King" fame, and "Mr. Fullswing" author Shinya Suzuki.

Akira Toriyama: Akira Toriyama (鳥山 明 , Toriyama Akira , born April 5, 1955 in Nagoya, Aichi) is a Japanese manga and game artist.  He first achieved mainstream recognition for his highly successful manga "Dr. Slump", before going on to create "Dragon Ball"—his best-known work—and acting as a character designer for several popular video games such as the "Dragon Quest" series, "Blue Dragon" and "Chrono Trigger".  Toriyama is regarded as one of the artists that changed the history of manga, as his works are highly influential and popular, particularly "Dragon Ball," which many manga artists cite as a source of inspiration.

Ippongi Bang: Ippongi Bang (一本木 蛮 "Ippongi Ban") is a multimedia and manga artist, born January 4, 1965 in Yokohama City, Japan.  She has been called "one of the most well-known manga artists in America in the mid-1990s."

Supporting paragraphs: Dragon Ball (manga) Akira Toriyama
Answer: Dr. Slump