Chara

(me, just another human, says) So, you all aren't going to bring up the fact that two of the people here killed everyone, multiple times?

sans: we're aware. but we don't really care.

yeah, it was definitely Chara's fault and definitely not an outside force controlling Frisk's actions.

Chara: *chilling with frisk and sans* frisk: *chilling* *with* *Chara and sans* sans: *chilling with Chara* *and frisk*

Sarin: *chilling alone*