How to: Gold or brown body-con dress, red hair dye, single blue contact lens, fearless level of sass. In Gotham, there is probably no one more bad !*$% than Fish Mooney. When describing her character without giving away any spoilers, it's best to keep it short, sweet and simple. Bitch be crazy. Any costume you can put together for Fish Mooney is probably going to be all about the hair, eyes and general attitude. No one could pull off Fish Mooney without a terrifying amount of sass, so if you want to give this formidable vixen a try, you best work on your side glare and finger waggling.