I prefer to RP him as younger brother who is abused and manipulated by bis brother. (He lowers his self esteem so much and makes him scared and then always reminds him of how lucky he is to have him and showing small kind gestures now and then that make him think it's his own fault for disappointing him so much if he gets punished and that Papyrus is very kind, only trying to help him. Stuff like that. )
Seeing his much changed I'm glad my RPs in the private messages..... which are still there. Though, my account unfollowed all accounts I had followed so I had to redo that. If one of you checks my status, I'd be nice if you reply to the RP we had ;w;