-Sometimes when Killer gets excited, he starts talking in Arabic
-Since Killer can't really feel, they like to irritate people to see their reactions/emotions
-Killer doesn't hate Murder
-Killer flirts because it causes a reaction, not because he has any intrest in them
-Killer is very physically affectionate
-Killer tends to forget people's triggers and fears(for example; she will forget about Error disliking touch/having haphephobia and will try to touch him)
-Killer can do special flips and tricks with his knives/daggers
He drinks a sh*t ton of coffee and energy drinks but he is a smoothie drinker, that's just their go to. It helps them calm down, which feels weird considering he thinks he's always calm. (he's not)