Shadow of the Bat #3, debut of Amygdala.
Another Alan Grant/Norm Breyfogle creation- and they're responsible for an awful lot of villains. Amydala is a character that starts out as a throwaway thug with a serious anger management problem. Imagine Happy Gilmore with alopecia and jacked up to teeth on steroids!
This villain in truly developed by Chuck Dixon in his Nightwing ongoing, which is my new favourite comic series. A fine entrance as he kicks seven shades of crap out of the Caped Crusader. Good Stuff!