Conversation so far:
What was Rodney Dangerfield's early career like?
In the early 1960s, Rodney Dangerfield started down what would be a long road toward rehabilitating his career as an entertainer.
Why did Rodney Dangerfield's early career need rehabilitation?
What Rodney Dangerfield lacked was an image, a well-defined on-stage persona that audiences could relate to, one that would distinguish him from other comics.

Question: How did he create one?
Self-contained rewrite: How did Rodney Dangerfield create an on-stage persona?