Meet blueman! (Yes, the name is uncapitalized and no, I am not creative with names.) Usually, he is generally upbeat, but since the Army has awakened, he's been more...on edge. His two weapons he has are his broadsword, made with an unknown metal, almost indestructible, and the Devilsknife. Not kidding. He is a good fighter under pressure, but most of the time he would just try to calm down listening to music. If he doesn't, bad things start to happen...(counts as both kinda)
more stuff inside he (as an infected) would move slowly, occasionally disappearing into the "sludge", or whatever shadowy puddle around him is. when he does, he will appear a short period of time later somewhere else. note, he can either get attacked by the army to reach this form or just be left without his music (which is not good) (you can make it whatever you want to be)