Cruiser, I'm just gonna be brutally honest and express some concerns I have about your characters

1) Your character's powers have no weaknesses. Limitations are not weaknesses. For instance, "I cannot run for twenty hours straight". That is a limitation. "Every time I run, I develop hemophilia". That is a weakness. Your characters have limits to their powers, but given that they don't have flaws that are more vulnerable than a vanilla human it's hard to describe them as weakness. It seems like they can use their (rather strong) powers with zero consequences.

2) Where did Zac learn to become an expert in assassinations and knife fighting, neither of which are things you can really learn quickly or easily? I also have trouble believing, regardless of powers, that he managed to run a prison from the inside. Doesn't matter how good you are, you can't keep your guard up all the time, and gangs in prison generally tend to have some proficiency with killing other guys in prison. Beyond that, once they noticed this dude was involved with several gangs being straight up wiped out, and that he tattooed their signs on his body with each one, he'd probably get hauled in for something else/put in solitary.

3) I am generally leery of any sociopath character. I am not accusing you of doing so, but generally speaking, they tend to be an out for the RP'er to avoid developing character and to dodge personality weaknesses. I could roll with cold and harsh but sociopath, coupled with his unexplained proficiency at several different kinds of killing and his no-weaknesses power makes me leery. If I had to take down your character, how could I? Does he have any weak points? You yourself said [quote] "He became feared throughout the institution for his seemingly uncounterable power," [/quote]

4) Not to be a dick, I really don't get his backstory. His uncle raised them to be good kids and then turned and rapes their mother? And then he stabs his uncle and burns his mother to death? I don't understand why he did this. Sociopaths don't do violent things for no reason. They don't feel remorse over them, but that's not the same as doing violent things for no reason. They're still aware of the consequences of their actions, they don't get off on killing like serial killers do. He seems more psychopathic than sociopathic...and if he'd do something with such brutal consequences as that without a second thought, I'm worried about what he's going to do in this RP. Will he murder one of my characters for no reason the first chance he gets? 

5) Not to be a dick, again, but there is literally no way he could accomplish wiping himself from all known records like that. I also don't understand why he would do this. Again, sociopaths don't feel remorse but that doesn't mean they do super illegal stuff without a motive. Why does he go to all that effort, risk further incarceration (which, given that metahumans have existed for a considerable amount of time in this RP, I have trouble believing he could escape as effortlessly as he did, as guards would likely be aware of them and able to contain them) and death by doing all this. Killing people tends to piss MORE people off, and burning down a federal prison would probably piss the government off. No matter how good he is, the government has infinitely more manpower, resources, etc, and once they linked this long series of murders, arson, etc, to him, they'd have Marshals, anti-meta squads, cops, etc, hunting his ass at every turn. Disappearing would not be possible. And if he killed everyone that knew his name, why did he let that dude with connections to the Skulls live? Surely he doesn't care about one random guy that's a gang member at the time, given that he's wiped out all the other gang members in prison...?

Sorry if this comes off as rude or overly critical, I'm just somewhat concerned about this sort of character being in the RP.