Jerry Seinfeld Jerry Seinfeld Actor Jason Alexander George Costanza Actor Michael Richards Cosmo Kramer Actor Julia Louis-Dreyfus Elaine Benes Actor Renee Props Lois Guest Star Don McManus Duncan Guest Star Todd Kimsey Ned Guest Star Danny Woodburn Mickey Guest Star Vicki Lewis Ada Guest Star Martin Chow Lew Guest Star Mark Christopher Lawrence Boss Guest Star Michael Sorich Castro Guest Star Denise Poirier Arlene Guest Star Spencer Klein Kid Guest Star Eva Svensson Woman Guest Star Claude Earl Jones Mr. Bevilaqua Guest Star Andy Ackerman Director Tom Gammill Writer Max Pross Writer Sam Kass Writer