This article contains spoilers for Zach Cregger's Weapons, now available on VOD. Weapons director Zach Cregger revealed that Emmy-nominated actor Bill Hader suggested a key change in the horror film. In Weapons, Alex Lily (Cary Christopher) is the only third-grader who does not disappear, and plays a key role in the climax of the film. As reported by Games Radar+, Cregger discussed Hader's key suggestion with The Hollywood Reporter. With Weapons billed as an unconventional horror film, Hader's contribution heightened the film's emotional impact.