Otis Day is a fictional character from the 1978 film Animal House, which is a comedy set in a college fraternity. Portrayed by actor DeWayne Jessie, Otis Day is the lead singer of the fictional band Otis Day and the Knights. The character is known for his energetic performances and memorable musical numbers, particularly the rendition of "Shout." The film, directed by John Landis, became a cult classic and significantly influenced college culture and comedy. Otis Day and the Knights' music, blending R&B and rock, contributed to the film's popularity, making the character an iconic figure in American pop culture.