The Black Knight

From Family Guy - Wiki on Neoseeker

The Black Knight was Peter's idol because he saved him one time at the Renaissance Fair. After Peter lost his job he went back to the fair to be trained by The Black Knight. The Black Knight thought that Peter was hitting on his maiden and began to hate Peter. He told Peter he never wanted to see him again. Peter watched the joust anyway and The Black Knight called him a frizzle so Peter competed with The Black Knight in a joust and won.