Jerry Seinfeld Jerry Seinfeld Actor Julia Louis-Dreyfus Elaine Benes Actor Jason Alexander George Costanza Actor Michael Richards Cosmo Kramer Actor James Spader Jason 'Stanky' Hanky Guest Star John O'Hurley J. Peterman Guest Star Patrick Warburton David Puddy Guest Star Megan Cole Peggy Guest Star Kathleen McClellan Melissa Guest Star Jack Hallett Alan Guest Star Michael Fishman Gregg Guest Star David Dunard Leader Guest Star Wayne Wilderson Walter Guest Star Brian Levinson Andy Guest Star Eric Simonson Friend Guest Star Larry David Executive Producer George Shapiro Executive Producer Howard West Executive Producer Andy Ackerman Director Jennifer Crittenden Writer