Gregory John - is a video game producer. Gregory John began his career in 2007 and has worked for companies such as Armature, Beenox, Treyarch, Vicarious Visions, Beenox Studios and Activision Blizzard. Gregory John's first game was Spider-Man 3 which was released 17 years ago. Best Game Gregory John contributed to was Dead Star. Gregory John's latest work is Dead Star which was released 8 years ago.