Professor Frink

Professor John Nerdelbaum Frink, Jr., or simply Professor Frink, is a recurring character in the animated television series The Simpsons. He is voiced by Hank Azaria, and first appeared in the 1991 episode "Old Money". Frink is Springfield's nerdy scientist and professor and is extremely intelligent, though somewhat mad and socially inept. Frink often tries to use his bizarre inventions to aid the town in its crises but they usually only make things worse. His manner of speech, including the impulsive shouting of nonsensical words, has become his trademark which is highly characteristic of Tourette syndrome.

Frink was originally depicted as an evil scientist in "Old Money". When Azaria ad-libbed a voice for the character, he did an impression of Jerry Lewis's Julius Kelp character from The Nutty Professor. The staff liked the voice and therefore changed Frink to be more like Julius Kelp, both in appearance and personality — he became more nerdy, and went from evil to just mad. Lewis later guest-starred on the show as Frink's father in the 2003 episode "Treehouse of Horror XIV".

The professor has received acclaim from critics, particularly for his bizarre inventions such as the hamburger earmuffs, and he has appeared on many reviewers' listings of their favorite supporting characters from The Simpsons. Frink has been featured in other media relating to the show, such as comics, video games, and a simulator ride at Universal Studios Florida. The character's popularity has led to him giving name to the computer programming language Frink.