The Hulk is one of the most predictable characters in the Marvel Universe, because his battles almost always involve smashing or sheer resilience, but he's also a bit of a head case too.
And whether he's locked in a fit of rage, struggling with his identity crisis or trying to figure out why his friends are fighting with him The Hulk definitely isn't all there mentally.
Over the years the Jade Giant has made some downright bizarre decisions, such as hooking up with his first cousin She-Hulk, playing baseball while wearing blackface, and beating up Santa Claus in front of a bunch of kids.
Beatin' on Thor is one thing, but you'd better leave Santa Claus alone you big green/gray brute!