Sweet Tooth is a villain created for The New Adventures of Batman. He commits crimes with a candy motif, and he appears to be addicted to eating candy and sweets. He wears a purple sweater and a yellow hat, and is clearly overweight. He uses children as henchmen who enjoy his gluttonous need for candy. He was voiced by the late Lennie Weinrib (who also played King Leonidas), impersonating Paul Lynde. He was also played by Jeff Blim in "Holy Musical Batman".
Sweet Tooth appeared in only one episode in where he tries to change Gotham's water supply into chocolate and blackmail the city for five million dollars which he doubles to ten million after Robin makes a pun about his weight. Sweet Tooth like almost all Batman rogues from that era rely on gadets, and weapons that fit their motif, Sweet Tooth always uses candy to either escape or attack Batman and Robin. His plot to blackmail Gotham into paying for their water back is foiled when Robin infiltrates Sweet Tooth's organization. Then Batman along with Batgirl find Sweet Tooth's water locking device and have him trapped along with his gang in his own taffy wade with his candy cannon. Sweet Tooth orders his henchmen to try and eat their way out, but the kids who cannot eat anymore give up. Batman then comments on sending Sweet Tooth to jail, and taking the children to the dentist and then to juvenile detention centre.
Batman: the Brave and the Bold
Sweet Tooth made a cameo appearance in Batman: The Brave and the Bold episode, "A Bat Divided!" among several other third-rate villains at the "8 Bar", a known haunt for second-stringer Batman rogues in Gotham City. Sweet Tooth was glimpsed sitting at the bar counter eating a lollypop and a bowlful of candy, when the hero Firestorm and three atomic counterparts of Batman crashed the bar, looking for action. Along with King Cobra, the Brand, and Calendar Man, Sweet Tooth abandoned his bowl of candy at the bar and huffed toward the Batman, still clutching his pink lollypop in one hand. Unfortunately, Signalman made a lunge for the Batmen at the same time, missing the heroes but crashing into a rack of billiard cue sticks, which scattered across the floor of the bar. Sweet Tooth slipped on the cue sticks, tripped, and then slid across the room before crashing head-over-heels into a nearby wall. One of the Batmen then claimed the villain's abandoned bowl of candy at the counter.