3. Deadpool's 4th Wall Crisis

Deadpool is the ultimate poster child for instability. He is incredibly reckless and often does not consider the consequences of his actions upon himself or those around him. Since he has regenerative powers he doesn't have to concern himself with personal injury. His original role in the Marvel universe was as a villain, but later became more of an anti hero. He is considered by many as one of the most powerful characters in the marvel universe considering the arc in which he wipes out every living super hero in existance.

In Marvel vs Capcom he takes the role of a comedic fighter that can't seem to take the rules seriously. 4th wall breaks are common and are the reason why he is given the nickname: The Merc With a Mouth. This move is particularly dangerous because Deadpool doesn't just break the 4th wall, he breaks everything in order damage his opponent. Since he has this ability it should be logical to assume that he could simply wipe out the health of his opponents health bar if he wanted too. Having the power to break the actual rules of the game is what makes Deadpool so deadly.