Otis Day and the Knights is a fictional band featured in the 1978 film Animal House. The character Otis Day, played by DeWayne Jessie, is a charismatic lead singer who performs rhythm and blues music. The band is known for its energetic performances and catchy songs, contributing to the film's comedic and nostalgic atmosphere. The group's most famous song is a cover of Shout, which became iconic after its inclusion in the movie. Following the film's success, Otis Day and the Knights gained popularity in real life, performing at various events and continuing to entertain audiences with their lively music.