Greg Morris received a standing ovation from the film crew after the scene where he faked symptoms of drug withdrawal. Morris gave an interview later and explained, "I'd had many friends who were junkies and I called upon that experience to do it. The applause was a good feeling, because the film crew had seen it all."
Greg Morris sings "Sittin' on the Dock of the Bay" as part of his cover as a singer.
Greg Morris developed a swaggering walk for his character, which caught the crew by surprise. He first used it in the street scene on his way to the phony drug buy. Someone yelled "cut" because the crew thought he was hurting in some way. His "bopping walk" soon became infectious, and the crew began "bopping" while moving equipment around the set.
Greg Morris created a character so irritating and obnoxious, that he is more unlikable than the two villains.