
The LGMs attempted to rebuild him, but the loss of their Uni-Mind to Zurg left them off their game, leading them to rebuild him with improper parts. On his first mission, he imitated Buzz repeatedly during their attempt to save the LGM homeworld from the Evil Emperor Zurg's dark forces, and was destroyed by Buzz's old partner in Zurg's employment, Warp Darkmatter (now Agent Z). The Little Green Men went behind Commander Nebula's jurisdiction and Star Command recruitment protocols when they inducted XR as a ranger, defending that the commander authorized it, unwittingly, after signing the LGMs vacation request through which they apparently slipped XR's acceptance form (and apparently, they do this kind of thing a lot, with Commander Nebula being none the wiser). The Xperimental Ranger, or XR for short, was created by the LGMs as the second robot Space Ranger, following the failure of the original XL model, programmed to learn from one of the best Rangers, Buzz Lightyear. His head is surrounded by an oval glass dome.

He also possesses continuous treads encased in green for feet and purple hands. He possesses short arms and legs which can stretch out to any length he wants. However, sometimes the optics appear green or red depending on his mood. He has a disembodied gold/bronze-colored head with yellow optics, encased purple circles and green eyelids. XR is a robot that sports Star Command's colors (purple, green, white) and logo on his chassis.
