Gary Marshall (Game Boy) - is a video game producer. Gary Marshall (Game Boy) began his career in 1997 and has worked for companies such as Tiertex Design Studios and THQ. Gary Marshall (Game Boy)'s first game was Disney's Hercules which was released 26 years ago. Best Game Gary Marshall (Game Boy) contributed to was Disney's Hercules. Gary Marshall (Game Boy)'s latest work is Disney's Hercules which was released 26 years ago.