Kaym
I third that, but bender is close in the running
-explosion-
Only Zoidberg. All else is for failures.
They only ever touch on what Futurama was supposed to be about in Zoidberg heavy episodes. That being the oddity of the future and/or mocking all science fiction. For instance, when they take Zoidberg to his home planet and Fry gets Zoidberg's woman. What happens?
Petty squabble turns into world wide event! What's better? The Vulcan Battle theme! HUZZAH!
Bender episodes are all about robot show-off-itude. That and crimes of varying degree. Nothing special. Nothing even amusing in and of itself.
Bender goes off to preform his prime directive as he never does in his job. Pft.
Some crab monster fights a person from 2000 over a woman using the Vulcan 'imma kill you' theme? Gold.