The Musician Prodigy Gasper

One dimension, two dimensions, three dimensions, seven. You are a child genius who theorized how to access the seventh dimension. In your spare time you compose piano music in the drum and bass genre. Even though you're smart, you're still a kid and enjoy movies about zombies and fishing. You do part time work for The Church of the Purple Flame because they offered you a near unlimited supply of blaster ammo.