Paxton credited his casting as Hudson to a chance encounter with Cameron at Los Angeles International Airport, during which he mentioned he would be interested in a role. The studio supported Paxton's casting because of positive feedback for his performance in "Weird Science" (1985). He was concerned the character would annoy audiences until he realized he was comic relief for the tense scenes. Cameron rewrote the role for the actor. Henriksen, worried about appearing as the android Bishop after the success of Ian Holm in "Alien" and Rutger Hauer in "Blade Runner" (1982), played the character like an innocent child who pitied the short-lived humans. Although he suggested distinctive eye pupils for Bishop when the character was alerted and had lenses mocked up, Cameron felt they made Bishop look more frightening than the aliens. Biehn, Paxton, and Henriksen had worked with Cameron on "The Terminator". "Aliens" was Reiser's first major theatrical role, following small parts in films like "Beverly Hills Cop" (1984).