In the TV sitcom 'Seinfeld', what is the name of Jerry's nemesis, played by Wayne Knight?

Bonnie , I don't know if you could even call what Elaine was doing "dancing". Looked more like she had a bug or rodent in her clothing that she was trying to get out!

I especially like “Elaine with the Rabies & Elaine dancing”!😂😂😂😂

Oh my gosh I love that show! Everyone in it is great!