Dominik 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 Dominik Mysterio as a member of The Judgment Day. He is a one-time former SmackDown Tag Team Champion with his father Rey Mysterio, in which they were the first real-life father and son team to win a tag team championship in WWE. Early life Dominik Gutiérrez was born on April 5, 1997, the son of Angie and Óscar Gutiérrez, better known as Rey Mysterio. He has a younger sister, Aalyah Gutiérrez. Professional wrestling career World Wrestling Entertainment/WWE Early appearances (2003–2010) Before he became a pro 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 edition 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). The Mysterios (2019–2022) 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