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"The Joker and I? Our love bloomed in a highly toxic industrial processing plant."
Harley Quinn[src]

Ace Chemicals is a chemical manufacturing company formerly headquartered in the heart of Gotham City's industrial district. The facility in Gotham was notably the site of the creation of the Joker and where he fully transformed Harleen Quinzel into Harley Quinn.

Following a breakup with the Joker, Harley Quinn commandeered and crashed a vehicle into the Gotham based facility, which caused a chain reaction that ignited and leveled the entire building.



Ace Chemicals was founded in Gotham City in 1921.[1] At some point afterwards, Ace Chemicals spread to other cities around the United States, with separate branches of Ace Chemicals established in Philadelphia and Palmera City.[2]

Birth of the Joker[]

"There. I was born down there."
Joker to Harley Quinn[src]

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

Birth of Harley Quinn[]

Suicide Squad Trailer- Harley Quinn Origin Chemical

Joker with Harley after her rebirth at Ace Chemicals.

After Harleen Quinzel helped the Joker break out of Arkham Asylum, the Joker brought her to Ace Chemicals. There, he asked her to test her devotion to him by performing 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.[3]

Shazam's Training[]

Shazam at Ace Chemicals

Shazam tests his strength at an abandoned Ace Chemicals plant.

In 2018, when Billy Batson became Shazam, he tested his strength in the abandoned Philadelphia branch of the Ace Chemicals factory, being recorded by Freddy Freeman.[2]


Harley Quinn destroys Ace Chemicals

Harley Quinn destroys Ace Chemicals.

Sometime later, Joker broke up with Harley Quinn, 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 that leveled the building.[4]

Behind the Scenes[]

  • In DC Comics, Ace Chemicals is noted as the birthplace of the Joker.
  • The sign on the front gate of Ace Chemicals says Janus Corp. which could mean that Janus may own Ace Chemicals.



External Links[]