Dr. Fineberg is a dentist. He was hired by T.U.F.F. to pretend to be a supervillain so that they could teach Dudley Puppy a valuable lesson about lying. He is the owner of Fineberg Dentist and had done some acting when he was in school. He has only appeared in Lie Like a Dog so far.
He is voiced by Matthew W. Taylor in a Yiddish accent.