Conversation so far:
What can you tell me about Jack Benny's characters?
Jack Benny played himself. Benny is a comic, vain, penny-pinching miser, insisting on remaining 39 years old on stage despite his actual age, and often playing the violin badly.
what other Personas did Jack Benny have besides himself?
He played one role throughout his radio and television careers, a caricature of himself.
Did Jack Benny like the characters that he played?
What show did Jack Benny do?
The Jack Benny Program, starring Jack Benny, is a radio-TV comedy series.

Question: Who did he work with?
Self-contained rewrite: Who did Jack Benny work with on The Jack Benny Program?