For the fourth season, a new version of the theme tune was composed. However, for the opening two-parter, Prometheus, the original music is used.
Bodybuilder Ric Drasin, who dyed his blonde hair black, was uncredited as the 'Demi-Hulk'
According to episode commentary by writer/director Kenneth Johnson, the footage of the dam floodgates and the characters carried off by the rapids is from the film "The Parallax View". Bill Bixby and Laurie Prange were dressed in clothes to match the stunt performers from the film footage.
2nd Hulk outings for Laurie Prange (Death in the Family), Whit Bissell (Kindred Spirits) and Carol Baxter (Haunted)
Throughout all scenes of David stuck in mid transformation, the change back sound effect is audible.