You are now attached to Frisk’s soul, CONGRATS!
As Frisk and Asriel walks along the cold village known as Snowdin you and Chara float next to them, you two are dead ghosts, that no one else can see except for Frisk and Asriel, since Asriel has a really strong bond with you three, and Frisk, due to you three sharing the same soul
Chara: “Frisk, I’m bored, do something funny… LIKE JUMP OFF A CLIFF!!!” Frisk: “What?! NO, I’M NOT GOING TO JUMP OFF A CLIFF FOR YOUR AMUSEMENT!!!” Chara: “Oh come on, it’s not like you can actually die since you can just load from your last save point!” Asriel: “Chara I don’t think that’s a good idea…” Frisk face palms while Chara points to a nearby cliff
Frisk: “Could you please be more like Asriel and Sage??? I’m trying to think of something!!!”