Jazz is one of the minor bots miners who mines for Energon on Iacon of Cybertron.
He is a rather unlucky miner, which might be why he doesn't think that highly of himself and his abilities. However, the right kind of encouragement just might give him the courage he needs...
Jazz was an upbeat miner with an artistic streak and one of Orion Pax’s most trusted friends.
History[]
Transformers One[]

Jazz is a miner transformer without a cog, working in the same sector as Orion Pax and D-16 (later Megatron) under the command of Elita-1. Jazz was almost killed when a volatile vein of purple Energon discovered by Wheeljack caused the mineshaft to catastrophically collapse, pinning his leg under a large boulder. Orion and D-16 promptly went back to save him despite Elita urging them not to, managing to rescue Jazz in the nick of time at the cost of his pinned leg.
Jazz had gotten himself a new leg by the time Orion and his team returned to Iacon with their new transformation cogs. Orion told them of Sentinel Prime's betrayal and how he had secretly been working for the Quintessons, giving them regular Energon, and that removing their cogs to keep them subservien. Orion rally them into rising up against Sentinel, and Jazz expressed doubt that the cog-less miners would be able to do much against Sentinel and his army. However, an inspiring speech from Orion convinced Jazz and the other miners to take up arms and join the battle above.
After Orion—now rechristened Optimus Prime—rejuvenated Cybertron's energon supply with the Matrix of Leadership and returned all the miners' transformation cogs, Jazz was among the crowd, marveling at his new door-wings, becoming members of the Autobots.