Ace Chemicals is a prominent chemical factory and warehouse located in the Otisburg district of Gotham City
Originally known as Kane Chemicals and owned and run by the Kane Family, the factory and company was sold to another owner and was eventually named "Ace Chemicals". Over the years Ace Chemicals became affiliated with underhand dealings and immoral practices; becoming linked with various trafficking of illicit materials.
T.O. Morrow is using Ace Chemicals as his hideout while he performs and produces various creations and experiments for the Joker's rampage through Gotham City. With Joker's own men patrolling the factory grounds, and an army of his own creations congregating inside, T.O. Morrow has even managed to reform Chemo within the factory; causing the world's heroes to instigating a sting to remove him from the factory before the Chemoid creature is unleashed onto the city.
- Ace Chemicals first appeared in Detective Comics #168 (February, 1951).
- Before his transformation, the Joker was a lab assistant at Ace Chemicals who, through a series of unfortunate events, attempted to rob the factory only to fall into one of the warehouse vats and become the Joker.
- While usually accessed via the On Duty Menu, players can also enter the Ace Chemicals Alert via an access teleporter at the front doors of the factory.
- The appearance of the Ace Chemicals factory is based off of the Batman (1989 film) instead of the comics.