Leonard Hofstadter

Leonard Leakey Hofstadter, Ph.D. is a fictional character portrayed by Johnny Galecki and one of the protagonists in the 2007–2019 CBS sitcom, The Big Bang Theory. Leonard is an experimental physicist who shares an apartment with his colleague and best friend, Sheldon Cooper. For his portrayal, Galecki was nominated for a Primetime Emmy Award and a Golden Globe Award in 2011.