Johnny Galecki Leonard Hofstadter Actor Jim Parsons Sheldon Cooper Actor Kaley Cuoco Penny Actor Simon Helberg Howard Wolowitz Actor Kunal Nayyar Raj Koothrappali Actor Mayim Bialik Amy Farrah Fowler Actor Melissa Rauch Bernadette Rostenkowski Actor Wil Wheaton Wil Wheaton Guest Star Laura Spencer Emily Sweeney Guest Star Fernando Rivera Salesperson Guest Star Rod Keller Wardrobe Person Guest Star Chuck Lorre Executive Producer Bill Prady Executive Producer, Writer Steven Molaro Executive Producer, Writer Eric Kaplan Writer Jim Reynolds Writer David Goetsch Writer Steve Holland Writer Anthony Rich Director