Rajesh Ramayan "Raj" Koothrappali, Ph.D
Rajesh is Howard Wolowitz's (Simon Helberg) best friend. Rajesh is orginally from New Delhi, India, but lives now in Pasedena, California. He works as an astrophysicist in the Physics Department at Caltech. His principal characteristic is a case of selective mutism which doesn't allow him to talk to beuatiful women outside of his family. He can speak to women if he is drunk.
Raj likes Sex and the City, Grey's Anatomy, The Good Wife and Bridget Jones' Diary. Despite both being ostensibly heterosexual, Raj and Howard often act like they are in a homosexual relationship. Rajesh has not have many relationships during the show. In season 4 he had a crush on Bernadette. In the season 4 finale Penny and Raj spend the night together.
Rajesh is portrayed by Kunal Nayyar.