Board Thread:Questions and Answers/@comment-14814786-20160817042450/@comment-27701762-20160817043203

Since the True Pacifist credits list JN Wiedle as "special inspiration" for Sans and Papyrus, I think there is little doubt that the reference was intentional.

Perhaps there is a way to work that into the Trivia sections on the characters' pages, though I'm not sure what would be the best way to do it, since it doesn't exactly lend itself to a standard citation.