A graduate of the full-time acting course at NIDA Williamson has starred in theatrical productions for Sydney Theatre Company, State Theatre of SA, Bell Shakespeare, Ensemble Theatre, Railway Street Theatre, Group Theatre Company and Naked Theatre Company where he has also directed several productions. Felix has an incredibly diverse list of acting credits spanning the last three decades, having worked with many of the country's foremost directors including Cherie Nowlan, Jeffery Walker, Dr George Miller and Baz Luhrmann, as well as the internationally renowned and multi-award-winning Terrence Malick. Career highlights include the television productions A Place to Call Home, Wentworth, Underbelly: Razor, Lost, My Brother Jack, Farscape, Go Big, RAN: Remote Area Nurse, the international production Me and My Monsters and Hawke in which he portrayed former Australian Prime Minister Paul Keating. Felix has recently been seen in The Letdown Series 2, Here Come the Habibs, Black Comedy, Miss Fisher's Murder Mysteries, Rake Series 2, The Mystery of a Hansom Cab, The Gentlemen's Guide to Knife Fighting and in Rachel Perkins' telemovie, Mabo. His many feature film credits include Peter Rabbit, The Great Gatsby, Palm Beach, Gods of Egypt, Truth, Backyard Ashes, The Thin Red Line, Babe II, Strange Planet, Me Myself and I, Standing up for Sunny, Nekromatic, Dirty Deeds, The Rage In Placid Lake, The Wannabees and Happy Feet. Felix performed with a stellar international cast on the feature Truth.