Conversation so far:
What can you tell me about Jack's characters?
Benny's comic persona changed over the course of his career.
At some point he developed a miserly persona.
what other Persona did he have?
This stage character was everything that Jack Benny was not: cheap, petty, vain and self-congratulatory.
Did he like the characters that he played?
Benny said: "I don't care who gets the laughs on my show, as long as the show is funny..
What show did he do?
CANNOTANSWER.
Who did he work with?
Mary Livingstone, his wife, was a supporting character, as his wisecracking and not especially deferential female friend.

Question: Was she as his wife on the show as well?
Self-contained rewrite: Was Mary Livingstone Jack Benny's wife on the show as well as in life?