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Leonard Leakey Hofstadter, Ph.D., is a fictional character portrayed by Johnny Galecki and one of the main protagonists in the CBS sitcom, The Big Bang Theory. Leonard is an experimental physicist who shares an apartment with his colleague and best friend, Dr. Sheldon Cooper .
Leonard (full body) Leonard Leakey Hofstadter [1] [2], Ph.D., is one of the main protagonists of The Big Bang Theory. He is an experimental physicist at the California Institute of Technology who formerly roomed with Sheldon Cooper in Apartment 4A. Now he and his wife Penny live in that apartment.
He played Leonard Hofstadter in the CBS sitcom The Big Bang Theory (2007–2019) for which he received a Primetime Emmy Award nomination, and David Healy in the ABC sitcoms Roseanne (1992–1997; 2018) and The Conners (2018–2019).
John Mark "Johnny" Galecki (born April 30, 1975) is a Belgian-born American actor best known for his role as Dr. Leonard Hofstadter in the hit sitcom The Big Bang Theory since 2007 and as David Healy in the sitcom Roseanne from 1992 to 1997 and 2018.
Leonard Hofstadter is an experimental physicist at Caltech in Pasadena. Although Leonard has many geeky interests and hobbies, he was the most willing of the guys to try and socialize with other people.
Johnny Galecki as Leonard Hofstadter: An experimental physicist with an IQ of 173, who received his Ph.D. when he was 24 years old. Leonard is a nerd who loves video games, comic books, and Dungeons & Dragons .
Johnny Galecki is an American actor who starred as Leonard Hofstadter in the sitcom The Big Bang Theory (2007-2019). He also appeared in movies such as National Lampoon's Christmas Vacation (1989) and Suicide Kings (1997), and TV shows such as Roseanne (1988-1997) and My Boys (2006).
