Name: Sebastian.
Nickname: Bloodwake.
Gender: Male.
Age: 26.
Mutation: They can incinerate the very air around their immediate person with pyro kinetic abilities. It's emotion based, and controlled through the use of martial discipline.
Mutation weakness: mal-nutrition, being underwater, solid objects.
Alignment: Likes to help others. Wary of partnerships though.
Backstory: Lived in a suburban family home, he was off adventuring in the uptown city a couple hours away when the meteors hit. A well likable sort of person. Nothing really rogue about him, but he does like animal from the muppets.
Appearance: Baz-B from Bleach.

Name:Kronos
Nickname:Phazer
Gender:Usually male
Age:17
Mutation:Shapeshifting, phazing in and out of matter. (Like Flash)
Mutation weakness:Light burns him. Literally. Whisps of smoke come off him whenever he is exposed to sunlight, and he can't see very well in bright light.
Alignment:The mutants were blessed to rule this world.
Backstory:Was a normal kid once, until he got hit by that glowing chunk of space rock. He worked as a informent to gangs and cops alike. He knows most eveyone on both sides of the law. Now he's a savage hunter, and fear is a word he no longer understands.
Appearance:A tall 17 in black robes, scythe in one hand.
True appearance:Think the jabberwocky from Alice Through the Looking Glass.

My img won't work for some reason

...sorry

Name: Scarlet Riegn
Nickname: Copperhead
Gender: Female
Age: 34
Mutation: Copperhead has all the attributes of a snake in humanoid form, permanently. This includes speed, agility, strength, flexibility, carnivorous(but only sometimes), and having venom. She also can speak to reptiles.
Mutation weakness: Due to her nature, if she goes to far, she can loose all sanity and mind and became more snake than ever. She also isn't bullet proof, but regular handguns have less effect.
Alignment: Neutral, she believes in law, and sees both sides commit unlawful acts. She is not over helping them though.
Backstory: Born in a small town in North Carolina, Scarlet grew up fairly normal, except for the fact that she didn't have many real friends. She made quite a few people mad because she was very opposed to wrong doing. This earned her the nickname of Copperhead, cause others thought she was mean like one. Those that were her friends were normally outcasts that were normally treated like dirt by others. After college, she moved to the city to become a police officer. She succeeded in this endeavor, one step closer to her goal, but the during work on her birthday, she changed. The entire station, who were throwing her a party, watched as her features changed. She grew slightly taller, her skin turned to scales tough and sharp, her nails claws, her pinkie fingers and toes disappeared, her teeth shrunk and her canines turned to fangs, a small tail sprouted and she got thinner. Her eyes turned from ocean blue human to icy serpentine. This tore her clothes and frightened her after the pained dulled away. The entire station stared in fear and awe. She wanted to hide and sink in fear, so she backed into a corner afraid of what her colleagues would do.

Appearance:
She is also missing her pinkie toes and fingers, and her hands have claws instead of nails.

I'm a bit confused. Did she grow a tail, or did her legs fuse into a tail?

@Shadow Dragon grew one

that's why i used sprouted

Ah, ok