You were being experiments by The Bad Sanses. They still care about you because they have been experimenting you for 5 years. They also do violent.You spend your time in their lab. But they dont know Error is your big brother.

Killer: Hey, birdie!

Error: look at you in worried

Nightmare:just stand there

Horror: Good morning!

Cross: Morning, birdie.

Dust: look at you still feeling anger about yesterday