Boy Kills World hits theaters today, April 26, and audiences are in for a treat. It's a frequently surprising and jolting rush of action and comedy with inventive visuals and unexpected twists, grounded by a silent but extremely emotive and physical performance from Bill Skarsgrd. He's like Buster Keaton on steroids here as Boy, a beefy fighter who has trained for vengeance ever since the totalitarian rulers of his dystopic city murdered his family and made him deaf and mute.