There have been two Avengers movies and eleven MCU movies. The Avengers are probably the biggest superhero group right now. They have faced 2 villains, Loki and Ultron. But they are not the main villains, and I will tell you why.
Okay, you may not agree with me, but I think the real villain is Odin.
Let me explain why. Okay, when Thor and Loki were kids, Odin promised that they would grow up to be kings. But when the time came, only Thor was chosen to take the crown. Loki goes on a rampage, claiming he is the rightful king, and Loki sends the Destroyer to kill Thor. The Destroyer ends up destroying a small town. After all of this, Odin banishes Loki, which doesn't make him very happy.
Somehow, after all of this, Loki comes back. He, and an army of Chitauri, go to take over the Earth and get revenge on Thor and company. The Avengers battle and finally defeat Loki.
But who really got the ball rolling...Odin.
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