Ben 10 Vs Zombies 2
Ben was n a mission to another planet when the zombie apocalypse happened. Little did he know that he doesn't have a planet to go to since the world is devastated by zombies. Fortunately, there was a few survivor left, so Ben knew that there is little hope left and he isn't going to abandon his race. Ben knew that he can't use the Omnitrix in this case since he might get bitten and turned into zombie. When that happened then it would be harder to deal since he is an alien zombie. It would have the alien powers ad it would be almost unstoppable. There was lots of guns everywhere, so Ben opt to use them instead of his alien power.