I'm Not Bobby

I can’t figure out which cartoon character/muppet Marty Markowitz reminds me of (something from the wind in the willows?). Help.  

Also, I think we’re distantly related.  As my granmpa Selig used to say, “We left the witz in Russia! now be a good a lad and make grampa a nice tall glass of vodka with ice.”

I shitst thee nicht.