Ashton Sylve (born January 28, 2004) is an American professional boxer who currently competes in the lightweight division. Known by his ring name H2O, he is currently signed to KSI's Misfits Boxing Pro stable.
Sylve made his professional debut on October 31, 2020 at the age of 16. He faced Gerardo Yescas. Sylve won the fight via a fourth-round TKO.
After racking up a record of 7âÂÂ0, Sylve joined Jake Paul's boxing promotion Most Valuable Promotions. His first fight with the promotion came on October 29, 2022 on the Jake Paul vs. Anderson Silva undercard. He faced Braulio Rodriguez. Sylve won the fight via a first-round knockout.
His next fight came seven months later in the main event of the first "Prospects" event. He faced Tanzania's Adam Kipenga. Sylve won the fight via Unanimous Decision.
His next fight came three months later on the Jake Paul vs. Nate Diaz undercard against William Silva. Sylve won the fight via a fourth-round TKO.
He returned six months later in the main event of "Most Valuable Prospects V" against Brazil's Estivan Falcao. Sylve won the fight via Unanimous Decision.
His next fight came five months later on the Jake Paul vs. Mike Perry undercard. He faced Lucas Bahdi. Sylve lost this fight via a sixth-round knockout, and thus losing his undefeated status and dropping to 11âÂÂ1.
On August 5, 2025, it was announced via social media that Sylve has been released from the promotion in a controversial manner. Sylve broke his silence a day later, and released his own statement via his own social media, claiming that he was "ghosted" by the promotion and accused them of mishandling his departure as well as failing to set up a rematch against Bahdi.
On October 19, 2025, it was announced that Sylve had signed with KSI's promotion Misfits Boxing as part of their MF Pro division. His first fight with the promotion came on November 9, 2025 on the undercard of Lil Cracra vs. FoxTheG. He defeated Daniel Lugo in the technical knockout in the fifth round.