Out of the Inkwell (1938)

Starring:

• Oscar Polk
• Bonnie Poe

Storyline
At the Fleischer studio, a black janitor, learning to hypnotize, conjures Betty Boop out of the inkwell and tries some suggestions on her. But two can play at that game... 

Minnie the Moocher (1932)

Starring:

• Cab Calloway and His Cotton Club Orchestra
• Billy Murray 
• Mae Questel

Storyline
Betty Boop runs away from home with her friend, Bimbo the Dog. They end up in a cave where a walrus, with Cab Calloway's voice, sings "Minnie the Moocher" and dances to the melancholy song. He is joined in the performance by various ghosts, goblins, skeletons and other frightening things. Betty and Bimbo are subjected to skeletons drinking at a bar; ghost prisoners sitting in electric chairs; a mother cat with skull-like eyes feeding her equally empty-eyed kittens; and worse.

I'll Be Glad When You're Dead You Rascal You (1932)

Starring:

• Louis Armstrong
• Ann Little 
• Billy Murray

Storyline
Koko and Bimbo take Betty Boop on a jungle safari, where they run afoul of a cannibal tribe caricaturing Louis Armstrong and his band members.

I Heard (1933)

Starring:

• Don Redman 
• Billy Murray
• Mae Questel

Storyline
I Heard is a 1933 Pre-Code Fleischer Studios animated short film starring Betty Boop, and featuring Koko the Clown and Bimbo. The cartoon features music by and a special guest appearance from jazz musician Don Redman and his Orchestra.