Cosmo Kramer, usually referred to by his surname, is a fictional character on the American television sitcom Seinfeld (1989–1998), played by Michael Richards. The character is loosely based on comedian Kenny Kramer, Larry David's ex-neighbor across the hall. Kramer is the friend and neighbor of main character Jerry, who resides in Apartment 5B, and is friends with George and Elaine. Of the series' four central characters, only Kramer has no visible means of support; what few jobs he holds seem to be nothing more than larks, although he never seems to be short of money.