Super X

The Super X (スーパーX, Sūpā Ekkusu) is a fictional Japanese military aircraft featured in the 1984 Heisei Godzilla film The Return of Godzilla. The concept and basic design were reused for the Super X-II in 1989's Godzilla vs. Biollante and the Super X-III in 1995's Godzilla vs. Destoroyah, both under the command of Sho Kuroki, Special Pilot of the Defense Agency.

The Super X was a joint project of the Ground and Air Self-Defense Forces. Designated the Capital Defense Mobile Fortress T-1, it was a piloted VTOL craft constructed in secret to defend the Capital of Japan in case of emergency, in particular a nuclear attack. It was operated by a crew of six, armored with heat-resistant titanium alloy integrated with platinum circuitry, heavily armed with missiles, machine guns, and high-intensity lasers, and used three underside rotors for lift. The craft was thus well-suited to engage Godzilla in Shinjuku when the monster invaded Tokyo in 1984. Its magazine of missiles were fitted with cadmium warheads, which were temporarily able to control the nuclear reactions keeping Godzilla alive.