Mulvey was born in New Zealand, and is of Maori and European heritage. His family moved to Sydney, Australia when he was eight years old. He is best known for his roles as Mark Moran on the popular Australian drama Underbelly, and as Bogdan 'Draz' Drazic in Heartbreak High. Mulvey attended Beacon Hill High School (New South Wales) along with other Heartbreak High cast members Jon Pollard and Alle Brunning.