"I'll destroy you in a fight. Do /not/ challenge me."
"This is your last chance to walk away..."
"You don't want this fight, _____."
"Do not make me hurt you."
"Why should I trust /you/?"
"You want something or are you just here to bug me?"
"Either get out of my way, or I will /remove/ you."
"I killed my entire family and I will kill you too if you piss me off."
"If you walk into this fight, you will not be walking out of it."
"I have been told I've got a dark personality. A few times."
"Get out of my house!!"
"Curiosity in this world will get you killed, locked up, or both."
"I don't feel regret for anything that I've done... I /can't/ feel regret."
"Freak? Oh, you should see me in bed, darling."
"Back. Off."