I'd say six flags has licenseing to a lot more characters from batman than you think, that is assuming all of the cutouts in the lines are licensed. I can't remember all of them off the top of my head but some include Nightwing, Batgirl, Catwoman, Harley Quinn, The Joker, Two Face, Mr Freeze, Poison Ivy, Lex Luther, The Penguin, The Riddler as well as a few others, which is enough when they have licenseing for a couple other DC hero's as well