[Following the laws of 'no 4th walling,' we are going to say that John has never heard of the Avengers before. He has no idea what an Avenger is, nor does he know they come from comic books.

He does, however, know that the word 'Avengers' totally sounds like a name for a group of superheroes. So he has decided he wants to be an Avenger because of how cool it sounds.]

I don't know what's going on, but let me help! I bet I can get everyone to stop being stupid or fighting or whatever your problem is.

[So says the 14-year-old boy in pajama-looking clothes. Yep.]