Fenix Rypinski (b. October 11, 1995), popularly known as Fenix Flexin, is a rapper from Los Angeles, California best known for being a founding member of the hip-hop collective Shoreline Mafia.

Growing up Fenix was inspired to rap by Southern rappers Three 6 Mafia and Paul Wall. In 2012 Fenix met Ohgeesy while doing graffiti in Los Angeles and the pair began making music shortly afterwards.

In early April 2020, Fenix announced via Twitter that he would be leaving Shoreline Mafia after the release of their album Mafia Bidness, which was released on July 31, 2020.