Trevor Walker - is a video game programmer. Trevor Walker began his career in 2010 and has worked for companies such as Raven Software, Treyarch, n-Space, Activision Blizzard, Activison and Square Enix. Trevor Walker's first game was Call of Duty: Black Ops which was released 10 years ago. Best Game Trevor Walker contributed to was Call of Duty: Black Ops. Trevor Walker's latest work is Call of Duty: Black Ops II which was released 8 years ago.