Marvel Comics is an American comics brand that publishes characters and series including Spider-Man, the X-Men, and the Avengers. It is part of Marvel Entertainment, which is owned by The Walt Disney Company.
Hulk from Marvel Comics was originally gray. Stan Lee chose gray as a scary color unrelated to any ethnicity, but a CMYK printing error turned Hulk green in the first comic issue. Lee liked the result and made green Hulks official color.