A list of Secret Characters that isn't so secret.
|Unlockable||How to unlock|
|Classic Hulk||Find any five comic covers|
|Gray Hulk||Smash 7500 things|
|Ironclad||Defeat all of the U-Foes, tricking one of them to take down another one of them. Then, kill Abomination.|
|Maestro||Destroy a building in each neighborhood|
|Professor||Successfully complete all fifteen Jump Challenges|
|Hulkbuster Iron Man||To unlock Hulkbuster Iron Man, have saved data on your PlayStation3 from the Iron Man videogame.|