That's what I like about a lot of the BTAS villains: they were straddling the line between good and evil and that often made them more sympathetic. When the Riddler actually became a superhero in the later Batman Adventures comic I totally bought it because they still had him solving puzzles when he did it. The puzzles were the biggest part of his reason for being so having them have him do good instead of evil made sense to me. He was a great (and funny) ally to Batman.