When David is stuck mid-transformation, the long shots were of bodybuilder Ric Drasin and close ups were of Bill Bixby. In the DVD audio commentary for this two-part episode, executive producer Kenneth Johnson stated that he wanted someone with a bigger body than Bixby but not as big as Lou Ferrigno. Therefore, Drasin was brought in to play the half-Hulk half-human David Banner (also known as the "Demi-Hulk") in those long shots.