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.
Was she as his wife on the show as well?
not especially deferential female friend.
She was not quite his girlfriend, since Benny would often try to date movie stars like Barbara Stanwyck.
How did the audience feel about his shows?
His comic rendering of these traits was the linchpin to the success of his show.
Were there other critics?
CANNOTANSWER.

Question: who else did he work with?
Self-contained rewrite: who else did Jack Benny work with, besides Mary Livingstone?