Fire Lord was constructed as a mining bot on Tallos 5 and once had an encounter with Preston Stormer. Shortly thereafter, Hero Factory scientists modified several of the mining bots to absorb power from fuel cells in order to end the bots need of going to a fuel base. However, their new ability seemed to backfire, as they could absorb more fuel than their bodies could handle. He eventually became corrupt with power and gained an addiction to fuel. He left the planet with several other fuel-lusting mining bots, committing acts of extortion, arson, robbery, assault, and conspiracy just for that power. He also acquired the technical specifications for William Furno's Dual Fire Shooter, which he used to build his Lava Blaster. Recently, he led his minions to Tanker Station 22, where they attacked and began to siphon all the fuel. The Alpha 1 Team was called in to protect the workers, but only succeeded in sending several of the workers to safety. Due to their enhanced power, the villains managed to beat the Heroes with ease. Surge, however, was able to draw them away while the Heroes retreated. Though Fire Lord decided to ransom Surge to the Alpha Team, the Heroes eventually returned to the Refueling Station after being upgraded and did battle with the Mining Bots. Fire Lord took on Stormer, and started to share his story before absorbing more fuel. As he was about to drop Stormer off a ledge, a Hero Pod containing Nex and Evo arrived and started to assist Alpha Team in combat. When Drilldozer and Nitroblast were unexpectedly defeated, Fire Lord ran and began to absorb more fuel from Tanker Station 22's largest fuel deposit. However, a Hero Craft hijacked by Surge crashed into him, severing his absorption hand and cutting him off of his power. Stormer was then able to defeat him and sent the villains to Hero Factory in order to clean them of their fuel addiction.
He, along with Drilldozer, Nitroblast, and Jetbug, returned to Equestria to take over the Crystal Empire and steal its energy to him and his minions powerful to take over all of Equestria. To do this, he and his minions needed to find the Crystal Empire and steal the Crystal Heart
He appeared in an alternate timeline where he and his Fire Villains have