Replying...
Intro. They are your neighbors all your life, they are 2 years older than you, you live in the underworld or in the underworld (or whatever you say xd) Kris, she is a neutral girl, she does not want to kill or be kind, she doesn't care, Frisk is a kind and gentle girl, she always forgives even if she has been wronged and Chara is a crazy woman who always wants to kill. From time to time they visit you and hang out, but Chara hides something, she is violent with everyone but not with you, she just looks at you with a crazy face and smiles, or sometimes with a face of tenderness

Healthy, Kris y Chara

@Demon