Silver Sable said:
Oh god.Clock King,Terrible Trio,and that Invisible guy were the worst villains of the show
Yet they all gave Batman a hard time. Clock King nearly killed him, invisible guy knocked him out, Terrible Trio evaded him with some success. Human villains always interested me, as opposed to the not so human (Joker, Penquin, Poison Ivy, Killer Croc, Two-Face, Riddler, and the rest). See, they all stick around to fight Batman continuously with their outrageous personas while the normal criminals are just there for background. Sure I wouldn't call Clock King, Terrible Trio, invisible guy, and Mad Hatter normal criminals (and definetly not Clayface) but they are a step lower in concern with rogues gallery rank which makes them more obscure, and they fall prey to unjust negative criticism from fans.
Just because they aren't heavy hitters, doesn't make them any less dangerous than Batman's regular rogues. I think Batman would even tell you that, if he were real. He'd probably say: "Never take any of them lightly, it could turn ugly real fast if your not respecting the situation." Another case in point, The Pack Rat
was one of Batman's most ridiculous short-lived, Joker induced, enemies but, it didn't make him any less dangerous than say Two-Face. Since this character was carrying a machine gun, when Batman and Robin found him, they both had to take things seriously;otherwise, someone, or one/both of them, could die/take injury.