Newman's role is primarily as Jerry's nemesis and a frequent collaborator in Kramer's elaborate and bizarre schemes. Often described as Jerry's "sworn enemy" ("The Andrea Doria"), Newman is cunning and often schemes against Jerry. He speaks often in a humorously sinister tone (mainly to Jerry). Jerry refers to Newman as "pure evil" on more than one occasion. Jerry's trademark greeting for Newman is to say "Hello, "Newman"" in a snide and condescending tone, while Newman responds "Hello, Jerry" in a falsely jovial tone. Helen Seinfeld also greets Newman in the same way.