4755 Knight Bus is a Harry Potter set released in the year of 2004. The set depicts the scene in Harry Potter and the Prisoner of Azkaban where Harry Potter, after fleeing Privet Drive, is picked up by the three-leveled purple Knight Bus, a transport for a stranded witch or wizard. It also includes a lamp post, Harry's trunk, Hedwig, a shrub, and Sirius Black in his dog form. Harry Potter and Stan Shunpike minifigures are included.