The Flash TV series is one of the most exciting shows in the superhero genre, as the show has entered into the multi-verse territory, alternative timelines, parallel universes etc. The best part about it is the host of speedsters that it has featured on the show.
Barry Allen (The Flash)
He is a son of Henry and Nora Allen who became a superhero “The Flash”. He was struck by lightning at the time of particle accelerator explosion and gained superspeed powers.
He was born to Rudolf and Mary West. He was always looked down upon by his parents, bullied by his brother. He is the successor to Barry Allen. He was given Flash costume by Barry, who trained him and took him under his wing as “Kid Flash”. On TV, he is borne out of Philosopher’s Stone held by Alchemy.
Jesse Quick is an alter-ego of Jesse Chambers, an extraordinary woman with super-speed powers. She is part of a multi-generational superhero family. She is the daughter of Golden Age superheroes – Johnny Quick and Liberty Belle. She is not a natural speedster like Zoom or Barry Allen, she derives her super speed powers through a special formula. She also has the gift to fly and she is blessed to have her mother’s qualities like sonic vibrations, superior hand to hand combat abilities apart from super speed-force. On TV show, she got exposed to radiation during particle accelerator explosion.
Professor Zoom & Zoom
Professor Zoom is different from Zoom, former is the classic version of “Reverse Flash” who was the villain in times of Barry Allen, but when Wally West became Flash, villain changed to Zoom. Both moves across different worlds and timelines. One played the big baddie in season 1, the other one in season 2 of the show.
He is a self-proclaimed God of Speed and a loose version of Black Racer from Geoff Johns latest Flash Rebirth. He first became a thing during Mark Wade’s run. He started off like Max Mercury/Johnny Quick who got stuck in a speed force in the past and then he was brought into the present day. He is a Wally West era villain which explains the presence of Kid Flash. He is not just a powerful speedster, he can create special force fields, transfer kinetic energy at will to anything around him and create a geo-kinesis/earth-bending effect. He is also a master of psychological torture.
He is the Flash of Earth-3 and a doppelganger of Henry Allen (Barry Allen’s father).
In comics, she was a Lex Corp speedster who could switch on & off her powers. On TV show, she was born out of Velocity 9 drug but her body flew apart as it wasn’t sustainable.
The Rival/Edward Clariss
He was first introduced in 1949 Flash Comics, Issue #104, he was the Reverse Flash of Jay Garrick’s Golden Age era. He is the nemesis of Kid Flash during the Flashpoint timeline.
He is literally the agent of death, as he carries speedsters and returns them to their source i.e speed force. In the comics, Wally West defeated him by racing to the end of time where death is meaningless. He isn’t really a villain, in fact, Barry Allen has once taken up the mantle of Black Flash in the comics.