The Black Knight saves Peter from a life-threatening jump at the Renaissance Fair as a teen and has been his hero since. Peter dreams of becoming a jouster and eventually pursues this dream after he loses his job. He immediately gets on the bad side of the Black Knight (nicknamed BK) and is challenged to a duel. With the help of an angry Mort Goldman, Peter defeats BK.
The Black Knight appears in Mr. Saturday Knight and is voiced by Will Ferrel.