Excellion is an Autobot originating from the Unicron Trilogy continuity. His home planet is uncertain, with evidence pointing to either Cybertron or Velocitron; this ambiguity stems from his packaging featuring the Speed Planet insignia and inclusion of a Velocitron Key, despite many Transformers carrying planetary keys not matching their true origins. The absence of clear-plastic tires further suggests a non-Velocitron origin. A brooding loner, Excellion commanded greater respect from Decepticons than fellow Autobots due to successfully infiltrating Decepticon bases undetected on multiple occasions. While his skills were valued, his attitude estranged him from Autobot peers. His primary ability is Stealth Running, enabling movement without detection. He transforms into a red and orange sports car with translucent blue elements, specifically a Chrysler ME 412-inspired vehicle mode. This alternate mode features integrated weaponry activated by Cyber Keys, including deployable winglets and a missile launcher. In broader Transformers lore, Excellion is the son of Overload and was recommended by Star Convoy for Autobot Academy. After one year of enrollment, he dropped out and vanished without explanation. His disappearance became a point of concern; Overload later investigated reports of Excellion's presence on Acadeimos, though these were confirmed to be sightings of a clone named "Excellion II," created during a lab accident involving Hot Shot. This clone adopted the name due to physical resemblance to both Excellion and Hot Shot. Excellion's narrative extends into the Autobot Academy continuity, where his legacy persists through comparisons between Hot Shot and himself, with characters noting their shared body type and similar appearance. Windcharger explicitly documented the resemblance by comparing images of both individuals. The character's toy history includes multiple iterations: The original 2006 Deluxe Class figure was a redeco of Cybertron Hot Shot, designed as an homage to Generation One Hot Rod with specific color variations. This mold was reused for the Shattered Glass Goldbug exclusive and repainted for the Legends of Cybertron line under the "Hot Shot" name despite matching Excellion's color scheme. A 2006 Transformers Attacktix booster piece depicted him with combat capabilities, including a "Sacrifice" special ability and shooter attack type. A 2025 Age of the Primes Deluxe Class figure commemorated the 20th anniversary of the Cybertron animated series.