Bimbo's Initiation

Bimbo's Initiation is a 1931 Fleischer Studios Talkartoon animated short film starring Bimbo and featuring an early version of Betty Boop with a dog's ears and nose. It was the final Betty Boop cartoon to be animated by the character's co-creator, Grim Natwick, prior to his departure for Ub Iwerks' studio.

Plot
During the opening credits, a chorus of college fraternity brothers boasts how easily they will induct Bimbo. Bimbo walks down the street whistling "Go In and Out the Window" and suddenly disappears down an open manhole. A Mickey Mouse look-alike quickly locks the manhole after him. He slides down a long chute into the underground clubhouse of a secret society. The leader asks Bimbo if he would like to be a member, but Bimbo refuses and is sent through a series of dangerous trials. After each trial the leader repeats the invitation, but Bimbo still refuses. Finally the leader removes his costume to reveal Betty Boop, who charms Bimbo with a dance. Bimbo accepts the invitation, and the other members of the society reveal that they are also Betty. They all celebrate by dancing to the tune of Byron Gay's "The Vamp".

Analysis and recognitions
The surreal, nightmarish atmosphere of Bimbo's Initiation has made it one of the most renowned Fleischer Studios shorts. Leonard Maltin described it as "the 'darkest' of all" the Fleischers' cartoons. In 1994 it was voted #37 of the 50 Greatest Cartoons of all time by members of the animation industry.

The cartoonist Jim Woodring identified Bimbo's Initiation as "one of the things that laid the foundation for my life's philosophy".

Copyright status
The film's copyright was renewed in 1958.