What is the name of the ghost who represents Hufflepuff House?

The ghost who represents Hufflepuff House is the Fat Friar. He is one of Hogwarts’ four best-known resident house ghosts, alongside Nearly Headless Nick for Gryffindor, the Bloody Baron for Slytherin, and the Grey Lady for Ravenclaw.

The Fat Friar is portrayed as cheerful, kindly, and unusually forgiving. He repeatedly argues that Peeves the poltergeist deserves another chance, even after Peeves causes trouble around the school. His friendly attitude fits Hufflepuff’s traditional values of loyalty, patience, fairness, and hard work.

The character appears at Hogwarts feasts and other school gatherings, where he is associated with Hufflepuff students and their table. Like other ghosts, he can move through walls and float through the castle, but he also retains a recognizable personality and role within the school community.

Readers sometimes confuse him with the Grey Lady because both are house ghosts, but the Grey Lady represents Ravenclaw. Nearly Headless Nick belongs to Gryffindor, while the Bloody Baron is Slytherin’s ghost. The Fat Friar is therefore the single canonical answer for Hufflepuff’s house ghost.