Could you define this a bit more? It's confusing - to me at least - what you are looking for. You want a character to impersonate another character? Like Joey Tribbiani doing Sylvester Stallone?

>Which of your favorite TV characters would be done by an impressionist as the character and not as the actor. It should be someone you can build a reasonable segment around, not just a line or two.
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>Rev Jim is Rev Jim and not Christopher Lloyd.
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>Gomer Pyle (whether you think he's funny or not) counts in my mind.
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>So does Cosmo Kramer (a poor man's Rev Jim and not nearly (IMNVHO) as creative)
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>Red Skelton's characters probably do NOT count since any impression of them are impressions of Red Skelton doing the character, not of the character itself.
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>The same is true of Jackie Gleason, but I'm of two minds about Crazy Guggenheim.
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>At any rate, that's my list. I'm curious about who others may add.