"Great Googily-Moogily!"

Arc, the titular Skeleton Knight, is a Knight-in-Shining-Armor (Both Figuratively & Literally) with a selfless sense of heroism & a jovial personality... who happens to have the face & body of a Skeleton. Chiyome is initially freaked out when he unmasks himself during the credits, but gradually warms up to his real face (albeit still creeped out).

Example of:
Friendly Skeleton