Main Cast Overview
The series features a core ensemble centered on a group of physicists and their friends. The show ran for twelve seasons and became one of the longest running sitcoms in television history. Official Big Bang Theory page
Lead Actors and Characters
Jim Parsons played Sheldon Cooper, a theoretical physicist with a rigid routine. Johnny Galecki portrayed Leonard Hofstadter, an experimental physicist who often serves as the emotional center of the group. Kaley Cuoco played Penny, the aspiring actress and neighbor who bridges the group with the outside world.
Supporting Cast and Recurring Roles
Simon Helberg and Kunal Nayyar played Howard Wolowitz and Rajesh Koothrappali, the other members of the friend group. Melissa Rauch and Mayim Bialik later became series regulars as Bernadette Rostenkowski and Amy Farrah Fowler. The supporting cast includes notable recurring roles such as Laura Spencer as Emily Sweeney and Brian Posehn as Bert Kibbler.
