"Aye, I would recognize him anywhere, even if he has a couple of doppelgangers here."

He sets it down gently, not entirely sure why he took it in the first place. He's upset but just sort of numb to it for the moment.

"Who would take his head off? Is it not enough to slit his throat?"

He isn't upset at Karkat being on his own, but he hasn't considered that it contributed to his death yet.