10 Worst Things Hulk Has Ever Done
4. Waging War On The Earth
It's fair to say that the Hulk was justifiably angry at the end of the Planet Hulk storyline. As far as he knew, his former friends had tricked him to send him into space forever (which they had) which he thought was in order to try and kill him out there (which they hadn't; Hulk's ship exploded by accident).
However, because the ship killed his partner and a huge portion of his newfound friends and family, the jolly green berserker is more mad than anyone could have possibly expected him to be upon returning to Earth.
Naturally, he goes after all the superheroes who sent him out, but in doing so he damages a huge chunk of the Earth and sort of wages war on the planet, given he brings an entire invasion armada with him.
While it's crazy to suggest that the Hulk should have just sat and tried to talk it out with everyone - because he didn't know the ship explosion wasn't on purpose, and because the Hulk isn't the most relaxed kind of dude - a full-scale invasion still seems a step far.