The Great Saiyaman is an "unauthorized" film that was set to feature the Great Saiyaman.
During production, Gohan mistook a stunt car chase scene for the real thing and intervened, putting a halt to the scene (much to the dismay of both actors and crew alike). Later in that same day, he replaced the stunt Saiyaman (who was afraid of heights), but the director was extremely displeased with his performance. Ultimately, Gohan continued on his way to Kame House and cast and crew alike could do little more than watch in awe as the real Saiyaman, whom they thought was a generic stuntman, flew off into the horizon.
- Some of the people working on the movie are from the Red Ribbon Army Saga of Dragon Ball or look almost exactly like them. A Commander Red look-alike works as the director (the only notable difference between the two is that the director does not possess an eyepatch), a Staff Officer Black look-alike as the associate producer, and the genuine unnamed human and pig robbers from West City (who tried to rob Goku of his 1,000 Zeni back when he was a child) work as stuntmen/general actors.
- The Director of the movie says that Gohan, the real Saiyaman, looks nothing like Saiyaman.