Little was detailed about Speed Demon's life before the zombie plague arrived on Earth-2149, however it can be presumed to have followed much the same path as Speed Demon of Earth-616.

After somehow becoming infected, Speed Demon was one of the many zombies who formed an alliance with the the Kingpin, giving him food offerings so that he would allow them to eat clones of uninfected humans to satisfy their hunger.

When Machine Man of Earth-616 traveled to Earth-2149 on a mission with Jocasta to obtain blood from an uninfected human from this reality, he decided to destroy the clones in order to put them out of their misery. This, however, caused the zombies to attack him.

Speed Demon, along with Quicksilver, pursued Machine Man after he escaped from the zombies by taking Ghost Rider's motorcycle. However, Machine Man managed to kill them by having them run into his microfillament wires at super-speed.[1]


  • Speed Demon possesses various superhuman attributes after having them bestowed upon him by the Grandmaster.
    • Peak Human Strength: Speed Demon's physical strength has been greatly augmented by the Grandmaster to levels beyond that of most humans. While not qualifying as superhuman, Speed Demon is as physically strong as a human can naturally be without be categorized as superhuman. At his peak, Speed Demon is able to lift up to 800 lbs.
    • Superhuman Speed: Speed Demon's primary superhuman power is the ability to run, move and think at superhuman velocities. Speed Demon is able to run at speeds of at least 175 miles per hour, sufficient to allow him to run across water over a certain distance and to allow him to run straight up walls. Moving at such a high rate makes him appear as little more than a blur over short distances.
    • Superhuman Stamina: The Grandmaster has rendered Speed Demon's musculature much more efficient than that of a normal human. As a result, his muscles produce considerably less fatigue toxins during physical activities. At his peak, Speed Demon can exert himself for up to 24 hours before the build up of fatigue toxins in his blood begins to impair his capabilities.
    • Superhuman Durability: The tissues of Speed Demon's augmented body are tougher, more resilient and more resistant to certain forms of physical injury than those of a normal human. His body is particularly adapted to resist the natural rigors that moving at such extreme velocities would have on a normal human. An un-enhanced human body would experience extreme friction to the skin, muscles, bones and particularly the joints and would result in permanent injury. Speed Demon is also more resistant to impact trauma than a normal human. He can withstand impacts, such as falling from several stories or being repeatedly struck with superhuman force, which would severely injure or kill a normal human while sustaining little to no injury himself.
    • Superhuman Agility: Seed Demon's agility, balance and bodily coordination are enhanced to levels that are beyond the natural physical limits and capabilities of the finest human specimen.
    • Superhuman Reflexes: Speed Demon's reflexes are similarly enhanced and are beyond the natural physical capabilities of the finest human specimen.


  • Speed Demon is a good hand to hand combatant. He specializes, primarily, in using various street-fighting techniques while moving at superhuman speed.

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