Hunter Zolomon

Hunter Zolomon is a male meta-human speedster from Earth Two. Following the explosion of S.T.A.R. Labs' particle accelerator, Hunter was affected during electroshock therapy by the dark matter emitted, giving him super speed. Following this, he escaped and became a supervillain known as Zoom, stylized as the Speed Demon. Later, using Velocity serums, Hunter managed to artificially increase his speed to the point where he could break the dimensional barrier - via this ability, after arriving in one alternate Earth, Hunter discovered another speedster, and after kidnapping him, stole his identity and alter-ego - Jay Garrick/The Flash, stylized as the Crimson Comet, in order to instill false hope - hope that would be ripped away.

Discovering the existence of Barry Allen on Earth One, Hunter traveled to the other Earth and acted as his friend and mentor, apparently training him to fight Zoom, but instead forcing Barry to increase his speed to eventually take it for himself. Hunter eventually killed a time remnant of himself to give Barry a reason to avenge "Jay" and increase his speed even further, only for his true identity as Hunter Zolomon to be discovered by Team Flash soon after. After losing a race to Barry Allen and attempting to destroy the Multiverse, Time Wraiths appeared and imprisoned Hunter in the Speed Force. Now mutated into a wraith-like creature, Hunter is now enslaved to enforce the rules of the Speed Force for eternity as punishment for his crimes against the timeline.