Dr. Ivan Krank
Character {{{character}}}
Gender Male
Race {{{race}}}
Occupation Scientist
Status Deceased
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Appearances {{{appearances}}}
Voice Actor {{{voice actor}}}

Dr. Ivan Krank is the villain in Teacher's Pet: The Movie. He is the uncle of Ian and an evil genius. He is voiced by Kelsey Grammer.

Teachers Pet: The Movie

Dr. Krank is first seen on "The Barry Anger Show" where the host interviews him and he says he can turn animals into human beings. Spot finds this as the opportunity to live his dream and goes to see him.

When Spot and Leonard find Krank's lab, he tries to turn a frog into a human but he only makes it 'moo'. Spot arrives and convinces Krank to not destroy the machine and that he needs a mammal to make a man not swamp creatures.

Spot is turned into a human but instead, he's turned into a man not a boy (his age in dog years). Krank then traps Spot and Leonard in a cage to turn them into media freaks.

Then, his nephew, Ian arrives and sets them free in exchange for a chew toy. When Krank finds out, he grounds Ian for the rest of the summer and traps him in a web. He also sends his minions, Dennis and Adele to capture Spot.

Later, when Ian calls his parents to take him home, Krank tells him to stay off the phone (he wants to call out for a pizza).

The next night, Leonard arrives at the lab to turn into a dog to be with Spot, but Krank uses him as bait. Suddenly, Spot, Pretty Boy, and Jolly arrive in time to save Leonard. Spot installs the nickel Krank gave him earlier in the machine and it turns him into a mouse and Jolly chases him outta the lab.


  • He's the only Teacher's Pet character to have died.
  • He was originally going to look like the evil scientist from the Looney Tunes episode, Water Water Every-Hare.
  • Krank's voice actor also voiced The Prospector of Toy Story 2 ano Sideshow Bob in the Simpsons.
  • Ivan. Krank is also similar to Claude Frollo from The Hunchback of Notre Dame. Rourke in Atlantis: The Lost Empire.