Unlock Bonus Characters
When you complete the following tasks the corresponding bonus character will become available.
Unlock Grey Hulk:
Smash 10,000 objects.
Unlock Professor Hulk:
Complete ALL jump challenges.
Unlock Savage Hulk:
Collect 5 comic book covers.
Destroy a building in each neighborhood.
Defeat the Abomination and also beat the U-Foes using a deceptive ploy so that a U-Foe defeats his own teammate.
Added by: Sanzano Aug 6th 2009, ID#3002