A/N: What are Realities? They are a parallel universe, also known as a parallel dimension, alternate universe, or alternate reality, it is a hypothetical self-contained plane of existence, co-existing with one's own. The sum of all potential parallel universes that constitute reality is often called a "multiverse".
Let's just say in our Reality, we cracked into another reality by mistake and sent our own hero to a world of Superheroes and Supervillains where in his reality he's ordinary, when he travels through reality he gains powers that seem Extraordinary.
He plans to use his newfound powers responsibly, he even meets a newly formed team that allows him into the group. The Avengers!