The Big Bang Theory

Mandy Chao

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Mandy Chao is a marine biologist at Caltech.


In "The Matrimonial Momentum" (S9E1), Leonard almost blew his wedding day when he admits to kissing a woman while on his North Sea expedition. There had been a lot of drinking, he'd been seasick and she was a smoker so it wasn't even that good a make-out session. He also chipped her tooth. Penny says that she thinks she can get by it since they weren't engaged at the time though she is not happy about it. Later in their honeymoon hotel room, Penny can't stop thinking about her and she asks him if he feels guilty. Leonard admits he feels guilty every time he sees her at work. What? Their honeymoon ends then and they go home arguing and slamming the doors of their respective apartments each spending their wedding night alone. Sheldon also knows the girl and calls the physicist both beautiful and brilliant. First he think about dating her since Amy broke up with him, then he feels her standards are too low since she likes Leonard.

She appears in person in "The Separation Oscillation (S9E2), where Leonard wants Penny to meet her so he approaches her at work. The kiss appears to have barely made an impression on her and she seems to sleep around. Leonard tells her about Penny's concerns and she even makes Penny comment that it seemed like he was trying to sabotage his relationship. She gets uncomfortable as he starts to analyze himself and decides that he may be hurting their marriage because he still doesn't feel worthy of Penny. Using Mandy as an drafted therapist he mentions a dream where he was nursing a baby in a cave. She then states that she can't believe Penny was worried about her.

Melissa Tang is the actress who played her.

v · e · d
Characters, Cast & Crew
Characters Main Leonard Hofstadter  ‧  Sheldon Cooper  ‧  Penny Hofstadter  ‧  Howard Wolowitz  ‧  Rajesh Koothrappali  ‧  Amy Farrah Fowler  ‧ 
Bernadette Rostenkowski-Wolowitz  ‧  Stuart Bloom  ‧  Emily Sweeney  ‧  Leslie Winkle    The Social Group
Recurring/Minor Debbie Wolowitz  ‧  Barry Kripke  ‧  Priya Koothrappali  ‧  Dr. V. M. Koothrappali  ‧  Mrs. Koothrappali  ‧  Lucy  ‧  Mary Cooper  ‧  Zack Johnson  ‧  Beverly Hofstadter  ‧  Mike Rostenkowski  ‧  Alex Jensen  ‧  Professor Proton  ‧  Althea  ‧  Cinnamon  ‧  Wyatt  ‧  Claire  ‧ Kurt  ‧  Eric Gablehauser  ‧  Mrs. Rostenkowski   ‧  Dimitri  ‧ David Underhill  ‧  Mrs. Fowler  ‧  Mike  ‧  Ramona Nowitzki  ‧  Kathy O'Brian   ‧  Venkatesh Koothrappali   ‧  Alfred Hofstadter   ‧  Mandy Chao   ‧  Missy Cooper   ‧  Josh Wolowitz  ‧  Elizabeth Plimpton   ‧  Jeanie   ‧  Abby  ‧  Martha  ‧  Lalita Gupta   ‧  Meemaw  ‧  Dennis Kim  ‧  Colonel Richard Williams  ‧  Eric S7  ‧  Susan  ‧  Randall  ‧  Christy Vanderbel  ‧  Doug  ‧  Eric S2
Cast Regulars Johnny Galecki  ‧  Jim Parsons  ‧  Kaley Cuoco  ‧  Simon Helberg  ‧  Kunal Nayyar  ‧  Mayim Bialik  ‧  Melissa Rauch  ‧  Kevin Sussman  ‧ 
Laura Spencer  ‧  Sara Gilbert
As Selves Wil Wheaton  ‧  Mike Massimino  ‧  Stephen Hawking  ‧  Katee Sackhoff  ‧ Steve Wozniak  ‧ Buzz Aldrin  ‧ Summer Glau  ‧ James Earl Jones  ‧ Carrie Fisher  ‧ Brent Spiner  ‧ Howie Mandel  ‧ Bill Nye  ‧ George Smoot  ‧ George Takei  ‧ LeVar Burton  ‧ Neil deGrasse Tyson  ‧ Brian Greene  ‧ Charlie Sheen  ‧ Stan Lee  ‧ Adam West
Crew Writers Chuck Lorre * (Creator)  ‧  Bill Prady * (Creator)  ‧  Steven Molaro *  ‧  Steve Holland *  ‧  Maria Ferrari *  ‧  Jim Reynolds *  ‧  Eric Kaplan *  ‧  Anthony Del Broccolo  ‧  Lee Aronsohn *  ‧  Dave Goetsch *  ‧  Tara Hernandez  ‧  Richard Rosenstock *
Directors Mark Cendrowski  ‧  Peter Chakos * (mainly as Editor)  ‧  Anthony Rich  ‧  James Burrows
Science consultant : David Saltzberg Director of photography : Steven V. Silver
Costume designer : Mary T. Quigley * Unit production manager : Kelly-Anne Lee *
Theme composer / performer : Barenaked Ladies Chuck Lorre Productions
also as Producer The Big Bang Theory : Full cast & crew on IMDb

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