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This article contains spoilers from the most recent DCEU film. You have been warned.

The Ace Chemicals plant was a chemical manufacturing facility in the heart of Gotham City's industrial district. It was notable as the site of the creation of the Joker, as well as the place that the Joker fully transformed Dr. Harleen Quinzel into Harley Quinn. Following a breakup with the Joker, the criminal Harley Quinn commandeered and crashed a vehicle into the facility, which caused a chain reaction that ignited and leveled the entire building.



The Ace Chemicals plant was built in Gotham City in 1921.[1]

Birth of the Joker

Sometime in the past, an unknown man fell into a vat of chemical solutions at the Ace Chemicals, resurfacing transformed into the Joker, with white skin and chemically dyed green hair.

Becoming Harley Quinn


Joker dives into Ace Chemicals vat after Dr. Harleen Quinzel

After Dr. Harleen Quinzel helped the Joker break out of Arkham Asylum, the Joker kidnapped Quinzel and brought her to Ace Chemicals. There, he asked her to test her devotion to him by preforming a trust fall into a vat of chemical solution below. She did so and was soon followed by the Joker who likewise dived in to retrieve her. The Joker pulled Quinzel to the surface, where it was revealed that her skin had been bleached white, much like that of the Joker's, and the two embraced and kissed.[2]

Suicide Squad Trailer- Harley Quinn Origin Chemical

Joker with Harley after her rebirth at Ace Chemicals


Sometime later, Joker broke up with Harley Quin, who took it very badly. After a long night of drinking, she decided to announce her emancipation to the entire world. As part of her plan she, commandeered and crashed a vehicle into the plant, causing a chain reaction the leveled the building.[3]

Behind the Scenes

  • In DC Comics, Ace Chemicals is noted as the birthplace of the Joker.


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