Jason Wylde is the grandson of WWII and "Golden Age" hero, Rocket Man. After he retired, Rocket Man (Evan Wylde) married and had two sons. Both inherited their father's super speed but the oldest son, Daniel also gained the ability to produce fire. He began a career as the hero Speed Demon but shortly into his career he inexplicably changed sides. Speed Demon killed or hospitalized the entire super team that he had joined. The younger son, Abe, had also gained other powers, Abe had impressive regenerative and recuperative powers, and he took the name Wildfire and battled his older brother for fifteen years, never able to catch him. Ten years ago, Daniel killed Abe in combat. Jason was born into the family and showed his mother and father (Abe and his wife, Carol) that he too had inherited the speed powers of Rocketman, like the second generation, he also showed a mutation , Jason was far stronger than a normal child his age and grew to have low level super human strength. He also had minor pyrokinetic powers like his uncle (Speed Demon). Shortly after Abe's funeral, Carol told her son the truth, that he was Daniel's son, not Abe's. She and Daniel had had an affair before he had gone insane. She got pregnant and Abe married her anyway, raising Jason as his own son. Jason was shocked. He vowed that he would continue his father's battle against Speed Demon. Unbeknownst to the rest of the family, Jason wants Speed Demon dead, not brought to justice. He fears and hates his father in a manner that even makes he himself uncomfortable; so he doesn't admit this to anyone. Shortly after taking the name Wyldefire, Jason joined the fledgling Lords of Justice. He often attempts to sidetrack the egos that run rampant through out the group and keep them on track. This is no easy task. Jason is one of the more decent fellows on the team. He understands the dynamics of the group pretty well and tends to work with Einherjar, Freya, and Empyrean to counter the Cults of self displayed by Glorious, Superion, and Lockdown. He has connections with many former 50's, 60's, 70's, and 80's heroes. "Don't get caught in my Jetstream, man." A speedster who can create a trail of flames in his wake, Wyldefire is more of a support fighter. He has developed a number of "Speed Tricks" in addition to his enhanced physical characteristics and superhuman speed. Jason Wylde is tall and has a sprinter's build. He has bright red hair and blue eyes. The Wyldefire costume is a white full bodysuit that covers him from head to toe. His boots, kneepads, guantlets, and headgear are all red. The eyes of his mask are red. He has a ring of fire around a white circle on his chest.

Wyldefire surrounds himself in a nimbus of flame and charges his opponent.