Doctor Alchemy (Arrowverse)

"I am Alchemy!"

- Doctor Alchemy

Doctor Alchemy is a major villain in the third season of The Flash. He is voiced by Tobin Bell, who also portrayed Jigsaw.

Approaching the Rival
After Barry has dissolved the Flashpoint-timeline and returned to what he believes is the former timeline, present-day Edward Clariss is woken up by a mysterious voice. He looks around to see that the word "Alchemy" is being driven into his mirror.

While Clariss is taking a bus ride, he is once more called by Alchemy and sees that the word Alchemy is being scratched into the bus window. Clariss, seemingly led by Alchemy, reaches a undergound temple where many cloaked men are kneeling. One of them gets up and turns around, revealing himself as Doctor Alchemy. He tells Clariss, who is having flashbacks of his Flashpoint identity Rival, that there is a way to get Clariss his speed back, asking him if he wants that. Clariss replies that he would indeed want that very much.

Clariss and Alchemy later set a trap for Barry. After Barry, who believes to be tracking down Clariss, arrives, he is attacked by Doctor Alchemy who uses a certain stone to shoot an energy blast at Barry. While Barry is being attacked by Alchemy, the perplexed speedster asks Alchemy what he wants. Alchemy reveals that he is helping people like Clariss achieve their true potential. He also claims to be preparing this world but does not reveal for what. Clariss then attacks Barry but is ultimately defeated. However, Alchemy is nowhere to be found and video feed of the attack also do not show that he was ever there.

Barry and his team later assume that Alchemy plans to give powers back to everyone who had them in the Flashpoint-Timeline, with Clariss being one of them. As a husk, an empty shell of Clariss, had been found by the GCPD right after Clariss got his powers back, the team assumes that the husks are signs of Alchemy giving powers to someone. As four of these husks have already been found, the team deduces that four people must still be around Central City.

The same night, Alchemy visits Edward Clariss in his prison cell and murders him for failing to fulfil Alchemy's orders,

Trivia

 * There are theory's stating that Doctor Alchemy is a product of Clariss' psyche and that Clariss is thus Doctor Alchemy. However, this seems unlikely as Alchemy and Clariss attacked Barry at the same time and Barry was able to see both of them.