Raj Koothrappali is a character in the popular sitcom 'The Big Bang Theory'. He is an astrophysicist from India who works at the California Institute of Technology. RAJ is known for his awkwardness around women and his inability to speak to them without having consumed alcohol. Leonard Hofstadter is another character in the show. He is a theoretical physicist and an experimental physicist who also works at the California Institute of Technology. Leonard is known for his intelligence, his loyalty to his friends, and his romantic relationship with Penny.