Hey there! Just wanted to pin my interest here, as well as throw in a rough idea for a character.

Idea: Character would probably be fresh meat for the prison, of either Orange or Red. Ability would be something along the lines of her body producing an ink-like substance that forms a vague animal-ish form around her body, which uses her human body as the core within the ink body. Would probably be triggered by stress or something, and completely loses control whenever it is active, acting mainly on instinct. She doesn't necessarily has a means of 'controlling it' but could delay the change for a period of time if she focuses all her attention to it. She would most likely be put in the prison as being a general danger to society due to her utter lack of control over her ability and how dangerous it could be, and after being secured from a failed operation of a mafia or some other group that was taking advantage of her ability. 

Rough idea, but some feedback would be greatly appreciated!