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Leonard Cooper is the son of Sheldon Cooper and Amy Farrah Fowler. He has only been mentioned by his father in the series.


Leonard has a hockey game but Sheldon doesn't want to attend, Amy forces him to take a shower and after reminding him that his parents supported him despite his differences, Sheldon gets convinced to attend his game, and is also forced to take acting classes with his daughter. (Memoir)


  • Leonard Cooper is named after both Leonard Hofstadter (Sheldon's best friend) and Leonard Nimoy (one of Sheldon's idols).[1]
    • Sheldon wanted to name his son Leonard Nimoy Cooper but was denied by Amy.
    • Leonard Nimoy filed a restraining order on Sheldon Cooper.
  • According to a brief comment made by Sheldon in the Young Sheldon Season 1 finale narration, he and Amy have “children” in the future. This means that Leonard Cooper has at least one sibling.
    • In the season one finale and the third season of Young Sheldon, Sheldon mentioned he has made a contract with his children, which could include Leonard.
    • In "A New Weather Girl and a Stay-at-Home Coddler", it was mentioned by Sheldon, that Leonard and his siblings constantly tell their father that he's ruining their lives.
    • In "Memoir", It is revealed that Leonard has a sister.
  • According to Sheldon in "Graduation", he and his sister Missy had the best graduation party, until the one they had for Leonard Cooper after his graduation.
  • It's unknown how far Sheldon Cooper is narrating from the future. Sheldon mentions his son Leonard Cooper whom he takes to the skate park, despite being disappointed about doing such. He also mentioned that Leonard had a graduation, which means that he is at least in middle school if not older.
  • In the Young Sheldon series finale "Memoir," Amy bugs an unwanting Sheldon to attend Leonard Cooper's hockey game. Leonard plays for the fictional Pasadena Penguins team.


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Young Sheldon Characters
Main Characters Main Sheldon Cooper  ‧  Mary Cooper  ‧  George Cooper Sr.  ‧  George Cooper Jr.  ‧  Missy Cooper  ‧  Meemaw  ‧  Jeff Difford  ‧  Billy Sparks  ‧  Amanda McAllister
Recurring and Minor Characters John Sturgis  ‧ Tam Nguyen  ‧  Paige Swanson  ‧  Veronica Duncan  ‧  Brenda Sparks  ‧  Herschel Sparks  ‧  Victoria McElroy  ‧  Evelyn Ingram  ‧  Wayne Wilkins  ‧  Hubert Givens  ‧  Sheryl Hutchins  ‧  Gene Lundy  ‧  Tom Petersen  ‧  Le Nguyen  ‧  Trang Nguyen  ‧  Mai Nguyen  ‧  Kim-Ly Nguyen   ‧  Barry Swanson  ‧  Linda Swanson  ‧  Erica Swanson  ‧  Dale Ballard  ‧  Selena  ‧  Robin Difford  ‧  Jana  ‧  Marcus Larson  ‧  June  ‧  Grant Linkletter  ‧ Linda Hagemeyer  ‧ Pat  ‧ Professor Boucher  ‧ Jim McAllister  ‧ Audrey McAllister  ‧ Amber