Mutation mode new character

I know you might not like this idea, but I myself think its kinda fun.

There could be a new character, dark orange color and when pressing button G, he could have a ability to climb up the walls (about 4 meters maximum high) and would have an attack that you could only release after pressing G. It would be like orange mist, smoke or fog, that would mutate you if you would be in it for 3 or 5 seconds. That would be good, because some of mutants team up with humans (they protect them) and don't let others get to them. Not anymore as this would clear them out. Anyways the mutant should have a wekness, like be more slowly or have less lifes.

OVERVIEW:
COLOR: orange.
ABILITY: climbing and smoke.
NAME: i haven't really figured that out.-.-

So tell me what do you think. If you tell me that it is stupid I understand, I came up with idea in school while I was having a math test.