Having a 9-year-old son, I have some knowledge of superheroes, but I'll go ahead and admit that the 4-year-old in this video, Mia Grace, knows more about comic books than me, my son, and most you put together.
Her dad asks her a series of questions, and from the name of Thor's brother to what makes up Captain America's shield, she nails them one after another. At first, it's like, okay, she memorized a few, but as they go on, you realize how deep her knowledge goes. And how much this tickles her father. I have no clue what she's talking about for a good chunk of it, but she's so adorable, it really doesn't matter.