Steve Downes' has been in commercial voice over since 1990. He has provided voices for several video games even though he famously does not like them. His first experience in voice acting for video games came in 1999 when he played the role of Gunnar in the video game Septerra Core: Legacy of the Creator by Valkyrie Studios. Although a relatively minor role, his performance caught the attention of the voice acting director and composer of the game, Martin "Marty" O'Donnell. When Marty began working on the video game Halo: Combat Evolved at Bungie Studios, he invited Steve to voice the game's main character, the Master Chief.