The Gotham characters are quite interesting this time. Falcone (John Doman) is basically the big cheese of the city of Gotham. He can get you anything. Just make sure you stay on his good side.
Fish Mooney (Jada Pinkett Smith) is probably the toughest female on the show. Even when she dies, she lives. She's a badass evil biotch.
Finally, we have Finn (Thomas McDonell) from The 100. He's a great character initially, then they decided to make his character a whole different person so that viewers would hate him and suddenly be OK with just having him die.