Introduced in 1986 with pilot Slipstream, the Conquest X-30 was GI Joe's most advanced fighter plane, capable of achieving speeds of mach 2.42.  Based on the Grumman X-29, the X-30 was a forward-swept wing jet fighter that featured 4 light sparrow air-to-air missles, 2 drop bombs and twin 25mm guns.  The X-30 was re-used as the 1989 "Python Conquest" as a part of Cobra's "Python Patrol".