At first, Cosmo Krank was the C.E.O. of a toy company named "Krank Co." that creates incredibly futuristic toys. However, Bruce Wayne notices that Krank Co's toys are very dangerous. So, he led a campaign that eventually closed down Krank Co. for good. Enraged, Cosmo Krank becomes a villain named "the Toymaker," who uses his toys in his attempt to get revenge on Bruce Wayne.
In other media
- The Toymaker is referenced in Batman: Arkham City. In Amusement Mile, you can find his old company factory, Krank Co.