Jerry Seinfeld Jerry Seinfeld Actor Julia Louis-Dreyfus Elaine Benes Actor Jason Alexander George Costanza Actor Michael Richards Cosmo Kramer Actor Jerry Stiller Frank Costanza Guest Star Estelle Harris Estelle Constanza Guest Star Bryan Cranston Tim Whatley Guest Star Daniel von Bargen Kruger Guest Star Karen Fineman Gwen Guest Star Dave Florek Harry Guest Star Kevin McDonald Denim Vest Guest Star Tracy Letts Counterguy Guest Star Larry David Executive Producer George Shapiro Executive Producer Howard West Executive Producer Andy Ackerman Director Dan O'Keefe Writer Alec Berg Writer Jeff Schaffer Writer