Coby Hansen, a 14-year-old human in Rockville, Colorado, shares his home with younger brother Bud and friend Lori Jiménez. Possessing extraordinary mechanical talent, he deciphers and repairs advanced alien technology with basic tools, proven when he restored the damaged Autobot Landmine. This expertise positions him as a vital asset to the Autobots’ quest to secure the Cyber Planet Keys and avert Cybertron’s collapse. A formative motocross accident shaped his resilience: after botching a jump and quitting racing, he returned at his father’s urging, embracing perseverance over victory. This ethos fuels his protective instincts, especially toward Bud. Childhood nostalgia for the “Green Gloop” amusement park treat later sparks his innovative plan to drain a flooding underground reservoir, merging whimsical memory with lifesaving strategy. Coby’s bond with Landmine defines his journey. After repairing the crash-landed Autobot, he guides Landmine’s transformation into a payloader and supports his physical and emotional recovery. Their partnership strengthens during missions like defending a Mexican museum, where Landmine protects Coby’s group from Decepticon attacks, illustrating their reciprocal trust. When conflict intensifies, Coby converts a decommissioned Scrapmetal into the piloted “Cobybot,” arming it with non-lethal tech to join frontline battles. Optimus Prime endorses the invention with an Autobot insignia, validating Coby’s drive to fight directly—a resolve hardened after Bud’s brief disappearance. Initially sparring with Lori over noise complaints, Coby gradually cultivates a rapport with her, blending teamwork and budding romance. Post-conflict, he aids Cybertronian refugees by designing covert alternate modes, though his first attempt unintentionally draws police scrutiny. Sporting dark blonde hair, green eyes, and practical attire—a black tee under a blue coat with white pants or a white shirt with jeans—Coby embodies rural pragmatism. His evolution from tinkering teen to Autobot ally underscores his ingenuity, loyalty, and bridging role between species, cementing his legacy in interplanetary solidarity.