Fenix Flexin, born Fenix Rypinski on October 11, 1995, in San Diego and raised across Southern California including Oceanside, Chula Vista, Huntington Park, Downey, and East Hollywood, began rapping in his early teens after connecting with OhGeesy over graffiti in 2012. They formed Shoreline Mafia, later joined by Rob Vicious and Master Kato in 2017, gaining attention with the track 'Musty' and their 2017 mixtape ShorelineDoThatShit. The group signed with Atlantic Records in 2018 and released Mafia Bidness before Fenix Flexin departed in 2020 to pursue solo work. As a solo artist, he released his debut album Fenix Vol 1 in 2021, following contributions to Shoreline Mafia's platinum singles. His music features West Coast hip-hop and trap styles, with tracks accumulating millions of streams and YouTube views. Shoreline Mafia's festival appearances, such as Rolling Loud, highlight the high-energy live performances associated with his career.