JLA (pictured) is in the middle of a fight when Uatu appears to observe. JLA mistaken his presence as aggression and they start attacking him. Since JLA has never met Uatu, they hit him with everything they got. Can Uatu handle some of DC's biggest powerhouses?
@ThanosIsMad:Didn't he get knocked out by Red Hulk
The same writer had Red Hulk beat Thor and kill an alternate reality Silver Surfer and steal the power cosmic for himself.
It's better to ignore all of that because it's stupid. Watchers are leagues above Hulk and Red Hulk. They're pretty much teambusters if they ever decided to fight.