Otto appears to be Nottingham's blacksmith, however, at the time of the film, he has broken his leg (but nobody knows how). This has resulted in Otto falling behind in both his work and his taxes. Friar Tuck comes by one day, and brings him money from Robin Hood. Upon hearing The Sheriff of Nottingham come by for tax collection, they attempt to hide the money in Otto's cast. Unfortunately, the Sheriff is able to hear the coins jingle as Otto walks, and manages to take the money.
Otto's later appearances are mostly cameos. He is seen as one of the spectators at the archery tournament. In Sherwood Forest, Otto takes part in the mocking play of Prince John, using a sock puppet to play the part of Sir Hiss. Later, he is among the townspeople who have been imprisoned for not paying taxes. At the end of the film, he is seen at the wedding of Robin Hood and Maid Marian.