4. Thor
The Norse God of Thunder is an incredible force to be reckoned with. He's the most powerful of all The Avengers and one of the most powerful superheroes of all time. I mean, he's a GOD. Thor's merely invulnerable, has ungodly strength, incredible endurance, the power to summon lighting, can fly using his hammer, not to mention that Mjolnir (Thor's hammer) is the fiercest weapon of all time. Thor is also long lived, meaning he ages at a veeeery slow rate. Thor is so powerful that it's almost unfair to have any villains challenge him. I don't think the movies thus far have done him justice in just how powerful he really is. Hopefully, The Norse God of Thunder will get his just do in the upcoming movie Thor: The Dark World. His weakness? It depends on who you ask and who's writing the stories at the time. The ones I've come across the most are his vulnerability to high levels of magic and reality warping. However, like I said, it all depends on who you ask and who's doing the writing at the time.