Boo (Sofia the First)

Boo is a ghost bat who appears in the Sofia the First Halloween episode "Ghostly Gala".

Background
He lives in the castle attic along with Sir Dax] and on Halloween he able to roam the castle and do some scaring where he met [[Clover the rabbit. The two eventually became buddies and through him told Clover why Sir Dax needed to have his Ghostly Gala on the night of Sofia's Halloween party, because he only gets to see his ghostly friends and family every one hundred years on Halloween night.