He was born in Pietermaritzburg, and made his first professional appearance singing the lead role in Menotti's opera, Amahl and the Night Visitors at age twelve.
In 2002, he directed Jonathan Cumming's The Gladiator at the National Arts Festival, and co-ordinated A Slice of Madness, a season of theatre in Durban in which he appeared in David Campton's Mutatis Mutandis.
In April 2003 he founded the annual Fools Awards in KwaZulu-Natal in recognition of arts practitioners' contributions.
His performance alongside Greig Coetzee in Kobus Moolman's Soldier Boy, winner of the BBC worldwide radio drama competition, was broadcast internationally.
Clinton Marius' highly successful one-man show, Uncut – The Penis Monologues, directed by Garth Anderson,[2] premiered in Durban in September 2003 before starting its national tour.