A Giant in Crossover Nexus

He was just there. He was in control. In control of what had become a problem partly because of him. And yet, fate had decided to play a cruel joke. He fell through one of those portals. And now he is in some ruined city accompanied by a kid, a teenager with gray skin and a cape, a boy with a weird watch, and some "crystal gem". So, he's gonna kick that red evil dude's ass get back to home. And He better have something that will return him to his world. *** [ Cartoon Network Crossover Nexus. This is where we start. ]