Dominik Óscar Gutiérrez (born April 5, 1997) is an American professional wrestler. He is currently signed to WWE, where he performs on the Raw brand under the ring name "Dirty" Dominik Mysterio. He is a member of The Judgment Day stable and formerly appeared on WWE's developmental brand, NXT, where he was a former two-time NXT North American Champion.
 Gutiérrez is a third generation professional wrestler, after his father Rey Mysterio and great-uncle Rey Misterio. He has been around wrestling for the majority of his life, thanks to attending WWE events as a child to see his father. He had his first direct involvement when he was 8 years old in 2005, which was a storyline in which his father battled Eddie Guerrero over his legal custody. He then began training in 2017 and later started appearing with his father on WWE television in 2019. The following year, he began a feud with Seth Rollins, which culminated in his debut match at that year's SummerSlam in a losing effort. He then formed a tag team with his father in which they won the SmackDown Tag Team Championship once, making them the first father and son team to win a tag team championship in WWE. He later turned on his father in 2022 to join the villainous stable, The Judgment Day, and battled his father in a losing effort at WrestleMania 39.
 Dominik Gutiérrez was born on April 5, 1997. Of Mexican-American heritage, he is the son of Angie and Óscar Gutiérrez, better known as Rey Mysterio. He has a younger sister, Aalyah Gutiérrez.
 Before he became a professional wrestler, Gutiérrez went to WWE events to see his father on several occasions. He was in the audience on the June 5, 2003, edition of SmackDown! in Anaheim, California where his father won the WWE Cruiserweight Championship from Matt Hardy. He celebrated with his father in the ring as SmackDown! went off the air. He had his first storyline in the summer of 2005 as part of a storyline between his father and Eddie Guerrero, in which the two rivals fought for custody of him. During the storyline, Guerrero stated that he was Dominik's biological father. On August 21, Mysterio defeated Guerrero in a ladder match for custody of Dominik at SummerSlam. He made two more appearances in 2006, first at WrestleMania 22 with Angie and Aalyah watching his father win the World Heavyweight Championship for the first time and second on the September 15 episode of SmackDown! where he watched backstage as his father battled with Mr. Kennedy. He once again appeared on the March 12, 2010, episode of SmackDown, this time during the feud between Rey Mysterio and the Straight Edge Society (CM Punk, Luke Gallows, and Serena).
 In 2018, Gutiérrez began training with Jay Lethal and his father to become a professional wrestler. On the March 19, 2019, episode of SmackDown Live, Dominik appeared on the show with his father, Rey Mysterio, who announced that he would be facing Samoa Joe for the WWE United States Championship at WrestleMania 35 on April 7. He once again appeared on Raw from April to June, during the feud between Mysterio and Joe. During the following months, he was involved in his father's storylines and matches, including interfering in Rey's WWE Championship match against Brock Lesnar at Survivor Series on November 24.
 In May 2020, Rey and Dominik feuded with Seth Rollins and Murphy, leading to Dominik's first match at SummerSlam on August 23, where he lost to Rollins in a Street Fight. At Payback on August 30, Dominik and Rey defeated Rollins and Murphy, earning his first victory in WWE. On the following episode of Raw, Dominik lost to Rollins in a qualifier for the triple threat match for the WWE Championship at Clash of Champions.
 As part of the 2020 Draft in October, Mysterio was drafted to the SmackDown brand. At Survivor Series on November 22, Dominik failed to win a dual brand battle royal. At the Royal Rumble on January 31, 2021, he entered his first Royal Rumble match at #21, eliminating King Corbin but was eliminated by Bobby Lashley. Dominik then began teaming with Rey, and on the WrestleMania edition of SmackDown on April 9, they faced The Street Profits, Otis and Chad Gable, and the champions Dolph Ziggler and Robert Roode for the SmackDown Tag Team Championship in a losing effort as the champions retained. At WrestleMania Backlash on May 16, they won the titles from Ziggler and Roode, marking Dominik's first championship in WWE and making him and Rey the first father and son tag team champions in WWE history. At Money in the Bank on July 18, The Mysterios lost the titles to The Usos, ending their reign at 63 days. A rematch for the titles was set for SummerSlam on August 21, which the Mysterios failed to win.
 As part of the 2021 Draft, Rey and Dominik were drafted to the Raw brand. On the October 25 episode of Raw, Mysterio lost to Austin Theory. The following week on the November 1 episode of Raw, his father Rey lost to Theory by disqualification, after he slapped Theory in the face, before the referee Rod Zapata caught him and calling the bell. At the Royal Rumble on January 29, 2022, Dominik entered at #14, but was quickly eliminated by Happy Corbin. On the February 21 episode of Raw, The Miz challenged The Mysterios to a tag team match at WrestleMania 38 with social media personality Logan Paul as his partner, which they accepted. On the first night of the event on April 2, Dominik and Rey lost to Miz and Paul. On the June 27 episode of Raw, The Mysterios competed in a Money in the Bank qualifying battle royal, which was won by Riddle.
 In the summer of 2022, The Mysterios began feuding with The Judgment Day (Finn Bálor, Damian Priest and Rhea Ripley) over their attempts to recruit Dominik into the group and betray his father. At SummerSlam on July 30, The Mysterios defeated Bálor and Priest following interference from the returning Edge, The Judgment Day's former leader. After losing an Undisputed WWE Tag Team Championship match on the following episode of Raw, The Judgment Day attacked Dominik and Rey. Edge came out to save them, but Edge accidentally speared Dominik. The following week, Dominik confronted Edge and shoved him. Later that night, during a match between Rey and Bálor, Ripley appeared and laid down a bloody and bruised Dominik, distracting Rey long enough for Bálor to win the match. Dominik accompanied Rey and Edge for their match against Bálor and Priest at Clash at the Castle on September 3, which Edge and Rey won. After the match, Dominik hit Edge with a low blow and a clothesline to Rey, turning heel for the first time in his career. On the following episode of Raw, Dominik officially joined The Judgment Day, helping the group attack Edge and Rey. 
 As part of The Judgment Day, Dominik took on a gimmick mirroring Eddie Guerrero's Latino Heat while together with Ripley, with Ripley calling herself as Dominik's "Mami". The following months, Dominik feuded with his father, who refused to wrestle him. During a segment where Dominik and Ripley attacked Mysterio's family on Thanksgiving, his character changed after he was arrested by the police. Dominik additionally tweaked his gimmick to that of an arrogant youth pretending to be a dangerous former convict who "had served time in prison with the world's most dangerous people", while lacking actual street-credibility.
 The feud with his father continued at the Royal Rumble on January 28, where Dominik entered wearing his father's mask. Dominik and Bálor eliminated Johnny Gargano before being eliminated by eventual winner Cody Rhodes. With Ripley winning the women's Royal Rumble match and choosing to challenge for the SmackDown Women's Championship, The Judgment Day began appearing on SmackDown, thus Dominik began tormenting Rey again. On the March 13 episode of Raw, Dominik challenged Rey to a match at WrestleMania 39, but Rey refused, saying he would never fight his own son. On the March 24 episode of SmackDown, Rey attacked Dominik after disrespecting his mother and sister, accepting Dominik's challenge. On Night 1 of WrestleMania 39 on April 1, Rey defeated Dominik after interference from the newly-reformed Latino World Order and Bad Bunny. 
 In July, he began to work as "Dirty" Dominik Mysterio. On the July 17 episode of Raw, Dominik and Priest failed to win the Undisputed WWE Tag Team Championship from Kevin Owens and Sami Zayn. The next night on NXT, Dominik claimed his first singles title when he defeated Wes Lee for the NXT North American Championship, after interference from Bálor, Priest and Ripley, ending Lee's record setting title reign at 269 days. On the following episode of SmackDown, Dominik defeated Butch of The Brawling Brutes to retain the title. In the process, Dominik became the first person in WWE history to wrestle in the main events of Raw, NXT, and SmackDown in the same week. On the following episode of Raw, Dominik successfully defended the title against Sami Zayn. At NXT The Great American Bash. On July 30, Dominik successfully defended the title against Lee and Mustafa Ali in a triple threat match. On the August 8 episode of NXT, Dominik retained the title against Dragon Lee.
 At Payback on September 2, Dominik helped Bálor and Priest capture the Undisputed WWE Tag Team Championship from Kevin Owens and Sami Zayn and helped Ripley retain the Women's World Championship against Raquel Rodriguez. On the September 25 episode of Raw, Dominik defeated Dragon Lee to retain his title. At NXT No Mercy on September 30, Dominik lost the title to Trick Williams, ending his first reign at 74 days. Three nights later on NXT, Dominik defeated Williams in a rematch to win the NXT North American Championship for the second time, becoming the third wrestler, after Johnny Gargano and Carmelo Hayes, to win the title more than once. On the following episode of NXT, Dominik failed to win the NXT Championship from Ilja Dragunov after interference from Williams. On Night 2 of NXT Halloween Havoc on October 31, Dominik successfully defended his title against Nathan Frazer. At Survivor Series WarGames on November 25, Dominik participated in his first WarGames match alongside The Judgment Day (which now included JD McDonagh) and Drew McIntyre against Cody Rhodes, Jey Uso, Seth "Freakin" Rollins, Sami Zayn and the returning Randy Orton in a losing effort. At NXT Deadline on December 9, Dominik lost the NXT North American Championship to Dragon Lee, ending his second reign at 67 days.