He was the Tooth Fairy's former assistant who wanted to take over her Non-Profit business by stealing Haley's tooth, when she was losing it. With the help of his Tooth Minions, he used the tooth to transform himself into a monster taking the money the Tooth gave kids who lost their teeth. But Jake destroyed him by hitting him with a big screen TV.
"You break into houses and leave money?! THAT'S NOT A VERY GOOD BUSINESS MODEL, IS IT?!"
"Good? Who said anything about good?!"
"Do you know how long I've been biding my time sneaking teeth from your stash to build my army of Tooth Minions, watching you giving away millions of dimes, quarters, dollars to ungrateful, grimy little brats night after night?!"
"Actually, the Tooth Fairy won't be leaving any "cha-ching" for anyone."
"I'm a different kind of dentist. The kind who's gonna be getting back every penny that fool Tooth Fairy gave away!"
Dr. Diente shocked
"Tooth Minions, attack!"
"Who needs a wand wen you've got the tooth of a dragon?!"