Bletcher provided the voices of various characters for Walt Disney Productions (including his recurring roles as Black Pete and the Big Bad Wolf).

However, Walt Disney disapproved for fear that people would recognize Bletcher from the studio's Mickey Mouse and Donald Duck short subjects.

[3] His booming voice can also be heard as "Don Del Oro" the Yacqi Indian god in the 1939 Republic serial, Zorro's Fighting Legion.

He also provided voice work for Ub Iwerks as the Pincushion man in the 1935 animated short Balloon Land, Owl Jolson's disciplinarian violinist father in the 1936 Warner Bros. short subject based on the song I Love to Singa, a wolf character almost identical to Walt Disney's incarnation in the Ub Iwerks cartoon "Little Boy Blue" released in 1936 and the menacing spider in Bingo Crosbyana.

In 1939, Billy Bletcher and Pinto Colvig were hired to perform ADR work for the Munchkins in The Wizard of Oz.