Two different of those Mars Heroes robots slapped together. I picked them up from a Dollar General on my way to Dallas.

The JUMP (Jet Unit Mobile Propulsion) Bot was the GI Joe's answer to the Cobra BAT. It came with fewer armaments, but was sturdier, and had a built in jump pack for fast movement. Only a handful of prototypes were every produced as the whole measure was deemed too costly. Mainframe and Hi-Tech came across the last remaining one and decided to give it a new paint job and kick the tires. Now it can be seen patrolling the PIT. A relic of a by gone era, but still useful in a pinch.