Jerry Seinfeld Jerry Seinfeld Actor Julia Louis-Dreyfus Elaine Benes Actor Jason Alexander George Costanza Actor Michael Richards Cosmo Kramer Actor Tim DeKay Kevin Guest Star Kristin Bauer Gillian Guest Star Pat Kilbane Bizarro Kramer Guest Star Kyle T. Heffner Bizarro George Guest Star Justina Vail Amanda Guest Star J. Patrick McCormack Leland Guest Star Harry S. Murphy Office Manager Guest Star Dana Patrick Model 1 Guest Star Shireen Crutchfield Model 2 Guest Star Robin Nance Model 3 Guest Star Mark Larson Bizarro Newman Guest Star Larry David Executive Producer George Shapiro Executive Producer Howard West Executive Producer