The Toymaker

At first in the show, Cosmo Krank is the C.E.O. of a toy company named "Krank Co." that created 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 to attempt to get revenge on Bruce Wayne.