I was supposed to pick up Newman at the zoo 12 hours ago

Who is Kramer?

Cosmo Kramer (Michael Richards) is the neighbor whose entrances arrive before he does. Schemer, dabbler, co-inventor of the Bro. His first name stayed a secret for six seasons until George pried it out of his mother — even Jerry didn’t know. Based on Kenny Kramer, Larry David’s real-life neighbor, who hadn’t yet signed off when the pilot shot — so in “The Seinfeld Chronicles,” he’s “Kessler.”