The FLEISCHER Brothers.

Fleischer Studios, Inc. is an American corporation which originated as a New York animation studio. It was founded in 1921 by brothers Max Fleischer and Dave Fleischer, who ran the company from its inception until they were fired by parent company and distributor Paramount Pictures in April 1942. 
Max Fleischer was responsible for the provocative, adult-oriented, cartoon Betty Boop vamp-character, who always wore a strapless, thigh-high gown (and visible garter) and was based on flapper icon Clara Bow's 'It' Girl and Mae West. A prototype of the squeaky- and baby-voiced cartoon queen (voiced for most of the 30s by Mae Questel) was introduced in a Bimbo Talkartoon entitled Dizzy Dishes (1930) - with her appearing as a long-eared puppy dog! In the early cartoon Betty Co-Ed (1931), she was called Betty, and in a pre-Code Bimbo cartoon entitled Silly Scandals (1931) (the title spoofed Disney's Silly Symphonies), she was named Betty Boop for the first time (she sings You're Driving Me Crazy while her dress top keeps falling down). However, in Stopping the Show (1932), she appeared under her own credits banner for the first time (she had previously appeared only in Talkartoons and Screen Songs). 

Betty Boop Clip - [1932]