Seconding whoever said papyrus was the knight being silly. I dont get it, esp with how deltarune seems 1000 times more interested and concerned with the new characters than the characters from undertale, and like. Papyrus was a big character in undertale, toby wouldnt make him a major character in deltarune.

Gerson doesnt count because he was a shopkeep in undertale and iirc was there to help susie along in her character arc.