Old Man Mole operates as a mechanic and junk dealer on EUЯPSS, a demilitarized moon orbiting Roboworld. This elderly figure possesses four arms, white hair, and pointy ears, utilizing his multiple limbs for efficient, complex mechanical work. He maintains a professional relationship with the racer "Sweet" JP, who calls him "Pops," suggesting a familial or mentorship bond.

Initially, he resists collaborating with Frisbee, JP's childhood friend and mechanic, due to Frisbee's organized crime connections and history of race-fixing. He only relents under JP's insistence. While assisting in building JP's Trans Am 20000 WR for the Redline race, he voices strong objections to using the unstable, high-powered DRZ Airmaster engine, deeming it excessively dangerous. His cautious nature and concern for JP's safety contrast with Frisbee's risk-taking approach.

During the Redline event, he discovers Frisbee planted an explosive device in JP's car under orders from the Inuki Group. When mobsters attack Frisbee for refusing to detonate the bomb, he intervenes. Using a customized multi-barreled revolver shotgun firing screwdrivers as projectiles, he eliminates the mob boss and his enforcers, rescuing Frisbee. Later, while visibly intoxicated during the race's climax, he inadvertently activates the explosive detonator. This accidental detonation propels JP's car forward with enough force to secure victory, destroying the vehicle in the process.

He exhibits pragmatism and skepticism, often complaining about risks but ultimately supporting JP. He demonstrates loyalty through protective actions and possesses a sardonic sense of humor. His habitual alcohol consumption is frequently noted, culminating in drunkenness during the race finale. His expertise in mechanics and resource procurement establishes him as a valuable asset.