I need a name for the character im writing about?

I started to write this book about a 13 year old guy. His personality is all messed up, he's a huge jokester, though he is actually pretty smart and clever, he goofs around a lot, isn't very serious, and is very weak physically because he's underweight. In other words, the character is based off of me. Though i dont want to use my own name. what happens is he finds a crudely colored box one day while at the grocery store with his gramma and opens it and releases the 7 demons of destruction and chaos. they fly off in different directions, one in each continent. The box also containeed a strange penddant and i left off from there. What i think is gonna happen is he is gonna have to go to a magical realm in each continent using the pendant and deafeat the demons and other monsters he encounters. But he's gonna be one of those people who always do heroic things by accident, like if hes gonna attac ksomeone wit ha sword but he trips and the sword goes flying and impales itself in the eye. something like that. what should i name him?