Mr. Teeny

Louis "Mr. Teeny" Toot, also known as Joseph Teeny, and know to his mother as Louise, is Krusty's chain-smoking trained monkey.

Similarities to Krusty
Like Krusty, he is a heavy smoker, and often seems depressed off-stage. He is sometimes seen as Krusty's driver, accountant, and butler. He is a classic act in Krusty´s show when he does "monkey business".

Family
Teeny's uncle was former head monkey at the Brazilian ministry of tourism. Three other monkeys have died while working for Krusty known by the same name. Krusty once said he missed the third Mr. Teeny and the current one couldn't hold a candle to him. His mother's name is Toot-Toot, and she refers to him as Louis when they are reunited.

Awards
Teeny was a writer for the “Good Guy Awards” and quit after being insulted on-stage by Krusty.

True Home
He is an immigrant from Brazil and was deported when Krusty went broke in, but has since returned.

Clothing
He wears a pink hat and bow tie, but has also been seen in a tuxedo and gold encrusted thong.

Future Plans
Krusty has implied that if he can't find a human willing to donate a lung when he gets cancer, he's planning on harvesting one from Mr. Teeny.

Non-canon
It is mentioned in The Simpsons: Hit & Run that he could be hidden inside Krusty's clown car.

Behind the Laughter
He is voiced by Dan Castellaneta. Captions are sometimes added when he speaks.

Trivia

 * In the third part of the anthology comic Dr. Nick @ Night, it is made apparent that Mr. Teeny is a girl, though many facts contradict this. Though considering the fact there have been many Mr. Teeny's one of them could have been female.
 * Despite being referred to as a monkey, neither Mr. Teeny or his mother have a tail, suggesting that he is an ape.
 * In the episodes "Fraudcast News", "Wedding for Disaster", and "Elementary School Musical", it is suggested there has been more than 1 Mr Teeny.