Fusion is a dedicated and selfless soldier, willing to make any sacrifice to protect his friends or the success of a mission. He is a notably gifted marksman, and enjoys testing his skills against those of his friends Bluestreak and Ricochet. His vehicle mode, designed for combat, is not particularly fast.
Marvel UK comics continuity
Millions of years ago on Cybertron, Fusion was assigned to escort Bluestreak on a mission to deliver shatter bombs to the Autobot military commander Optimus Prime. Ignoring his own safety, Fusion focused on picking off the Decepticon jets which were hounding his partner. A blast from one of these Decepticons killed Fusion, but Bluestreak was able to complete the mission thanks to his friend's efforts.
- The story And There Shall Come...A Leader! lifted designs and even art from the first issue of the comic, apparently to maintain a consistent look for Cybertron. This may explain why Fusion is a straight redeco of Optimus Prime's Cybertronic vehicle mode.