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The Big Bang Theory

Main Characters

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This page lists the Main Characters on The Big Bang Theory whose names have appeared during the opening credits currently or in the past.

Leonard Hofstadter

Leonard Hofstadter is the roommate of Sheldon Cooper, husband of Penny Hofstadter, and he works as a experimental physicist doing research at the California Institute of Technology with Sheldon, Howard, and Raj. Leonard is portrayed by Johnny Galecki.

Sheldon Cooper

Sheldon Cooper is Leonard Hofstadter's roommate, Amy Farrah Fowler's boyfriend, and he works as a theoretical physicist doing research at the California Institute of Technology with Leonard, Raj, and Howard. Sheldon is portrayed by Jim Parsons.

Howard Wolowitz

Howard Wolowitz is Bernadette Rostenkowski's husband, soon to be a father, and he works as an aerospace engineer at the California Institute of Technology with Leonard, Sheldon, and Raj. Howard is portrayed by Simon Helberg.

Raj Koothrappali

Rajesh "Raj" Koothrappali is Emily Sweeney's boyfriend, and he works as a astrophysicist doing research at the California Institute of Technology sometimes working with Leonard, Sheldon, and Howard. Raj is portrayed by Kunal Nayyar.

Stuart Bloom

Stuart Bloom is a longtime friend of the group and a skilled artist who's best known as the owner of The Comic Center of Pasadena. Stuart is portrayed by Kevin Sussman.

Penny Hofstadter

Penny Hofstadter is Leonard Hofstadter's wife, and she currently works as a pharmaceutical sales representative at Zangen with Bernadette. When she first moved in across the hall from Leonard, she was a waitress at The Cheesecake Factory and a struggling actress who had a longer on again and off again relationship with Leonard. Penny is portrayed by Kaley Cuoco.

Leslie Winkle

Leslie Winkle is an experimental physicist who has done research with Leonard at the California Institute of Technology.

Amy Fowler

Amy Farrah Fowler is Sheldon Cooper's girlfriend and a neurobiologist currently working at Caltech. Portrayed by Mayim Bialik.

Bernadette Wolowitz

Bernadette Wolowitz is Howard Wolowitz's wife and soon to be a mother, She works at as a microbiologist at Zangen with Penny. Portrayed by Melissa Rauch.

Emily Sweeney

Emily Sweeney is Raj's girlfriend who as a dermatologist in a hospital with an interest in the macabre. Portrayed by Laura Spencer.

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