Kaiju (怪獣, kaijū, literally "mysterious beast") productions primarily feature monsters, or giant monsters (大怪獣, daikaijū). Such series include Ultra Q, the Godzilla film series, the Gamera series, the Daimajin series, and films such as Mothra, War of the Gargantuas, and The X from Outer Space (宇宙大怪獣ギララ, Uchu Daikaijū Girara).