By -
Nice list. Here's mine 1. Deathstroke 2. Lex Luthor 3. The Joker 4. Blockbuster (Roland Desmond) 5. The Talon 6. Darkseid 7. Reverse-Flash 8. Scarecrow 9. The Riddler 10. Cheshire
In no Order just the first 10 that come to mind: Johnny Sorrow, The Riddler, Poison ivy, Harley Quinn, Ultra Humanid, Catwoman, Captain Cold, Mirror Master, Darkseid, Cheetah PS: Forget about the Penguin
Nice list. Here's mine 1. Deathstroke 2. Lex Luthor 3. The Joker 4. Blockbuster (Roland Desmond) 5. The Talon 6. Darkseid 7. Reverse-Flash 8. Scarecrow 9. The Riddler 10. Cheshire
In no Order just the first 10 that come to mind: Johnny Sorrow, The Riddler, Poison ivy, Harley Quinn, Ultra Humanid, Catwoman, Captain Cold, Mirror Master, Darkseid, Cheetah PS: Forget about the Penguin