- as Dr. Leonard Leakey Hofstadter
- as Amy Farrah Fowler
- as Dr. Dr. Sheldon Lee Cooper
- as Bernadette Rostenkowski
- as Penny
- as Stuart Bloom
- as Howard Joel Wolowitz, M.Eng.
- as Dr. Beverly Hofstadter
- as Dr. Rajesh „Raj“ Ramayan Koothrappali
- as Danny
- as Halley Wolowitz (Voice)
- as Karen
- as Kwame
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