This one was fun to do. A lot of time-demanding to. The lineart could've been better.
Funny note: The Scarecrow's real name is Dr. Crane wich is also the name of Kelsey Grammer's character from Fraiser who also voices Sideshow Bob. Wich explains the reason why I drew him as that villian. The Joker likes to laugh at people's pain, same does Nelson and are the bad guys Bart and Batman has known the longest. Lisa and Poison Ivy both want to prevent pollution and preserve plant life, but isn't able to do so successfully. Ivy does it in a criminal way and Lisa ends up causing a fuzz or annoying people.
Can't think much to say about the rest. Might add more stuff later.

EDIT: Damn, why didn't I think of Professor Frink as Mr. Freeze? Oh well to late to do anything with that now.