Damian is a minor character in Clarence. He is Mary's ex-boyfriend.
He was first mentioned as working with or for Bucky O'Neill (Hoofin' It). Damian also dated Nature Kate (Nature Clarence). In Pizza Hero, He appears on a picture (that was taken in 1998), and was presumably Ms. Baker's ex-boyfriend, He finally appears in Rock Show as it shows he gave up being a ladies' man and became a priest.