Gotham's Hellspawn

Nathan Nolan liked to think he's seen it all. Gods, Demons, Monsters,, he's seen it all with being a Hellspawn, battling Hell and Heaven, but going from one Universe to another? That's a whole new thing for him. After a battle with a monster, Nathan finds himself in a different world and meeting heroes similar to the ones in his world. Spawn/Batman/Avengers crossover.