The Flash: Alchemy Alternate Costume Design Revealed

Last week, fans finally learned the true identity of Alchemy when The Flash debuted “Killer [...]

Last week, fans finally learned the true identity of Alchemy when The Flash debuted "Killer Frost." The thrilling episode saw Caitlin Snow struggle with his villainous alter-ego from another reality, and it ended with fans finding out who Alchemy truly is. To celebrate the stunning revelation, some brand-new concept art of the character has been revealed, and it looks as sinister as ever.

Over on Instagram, Andy Poon uploaded concept illustration work he did for The Flash. "They finally revealed the secret identity of Doctor Alchemy in the latest episode of [The Flash] titled ["Killer Frost"] directed by [Kevin Smith]," the artist wrote. "Here's the concept illustration I worked on for costume designer Maya Mani, mask design provided by Flash's art department. Almost time for the crossover!"

The concept art shows Alchemy dresses in a long, green robe and leather pants. His iconic long-nose mask is seen firmly in place, and the villain's fists can be seen clenched at his sides. The artist also uploaded an image of Doctor Alchemy's gauntlet which he drew for costume designer Maya Mani.

If you are hoping to learn more about the baddie this week, then you may be disappointed. The CW just kicked off its annual superhero crossover last night with Supergirl. The special event will see the heroine team up with the Flash, Green Arrow, and the Legends of Tomorrow when a dangerous alien race begins invading Earth.

If you want to check out the synopsis for tonight's episode of The Flash, then you can read it below:

"IT'S HEROES VS. ALIENS IN THIS EPIC CROSSOVER EVENT — When aliens called the Dominators attack Central City, Barry (Grant Gustin) speeds over to Star City to ask the Green Arrow (guest star Stephen Amell) for help in stopping them. Realizing the battle against the Dominators is bigger than they thought, they track down the Legends of Tomorrow, and Barry and Cisco (Carlos Valdes) create a breach to bring back a secret weapon – Supergirl (guest star Melissa Benoist). Once all of the super friends are assembled, they come up with a plan to attack but a shocking secret related to Flashpoint is revealed and suddenly no one is sure who they can trust. Meanwhile, Wally (Keiynan Lonsdale) wants to join the battle against the aliens but Iris (Candice Patton) tells him he's not ready."

NEXT: The Flash, Arrow, Supergirl, Legends of Tomorrow Crossover Trailer / Advance Review: The Supergirl, The Flash, Arrow, Legends of Tomorrow "Invasion!" Crossover Raises The Bar / Invasion! Crossover Promo Photos / Potential The Flash Spoiler Spotted On Set / The Flash Heroes V Aliens Behind The Teams Featurette Released

Supergirl airs Mondays at 8 p.m. ET/PT; The Flash on Tuesdays at the same time; Arrow on Wednesdays and DC's Legends of Tomorrow on Thursdays. All four series air on The CW. The "Invasion!" crossover will air beginning November 28.