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.
Read more about Super X: Super X, Super X-II, Super X-III