Carol Ann Susi ... Debbie Wolowitz
Jim Parsons ... Sheldon Cooper
John Ross Bowie ... Barry Kripke
Johnny Galecki ... Leonard Hofstadter
Kaley Cuoco ... Penny
Kevin Sussman ... Stuart Bloom
Kunal Nayyar ... Raj Koothrappali
Melissa Rauch ... Bernadette Rostenkowski
Sara Gilbert ... Leslie Winkle
Simon Helberg ... Howard Wolowitz