system
Given the following post, respond as if you're commenting on Reddit:
human
[Marvel] How many different colors of Hulk has there been?
gpt
JUST banner... Let's see. Classic Green. Grey, which is either normal(he was originally greyish) or a smartish version of him which was usually a darker grey as either banner in the hulk's body or hulk with banner's intelligence. Neither ever worked out really well. There's a Red Hulk as well with varying stories behind that, though most recently it was the general whose always chasing him pretending to be/wanting to kill the hulk.