Parasite

"He's sick!" "That doesn't give him a right of passage. Daniel Rileson is a murderer! Whether he has some sick parasite in his brain or not, he is what he is. No one can say otherwise."

"You're telling me that if you had some freak symbiotic parasite feeding off of your body and brain, you wouldn't go mad either? He has nothing left! Do not try and hunt him down, he will hunt you before you hunt him."

"No one is safe."