Guest Star: Hermie Castillo

You are viewing a list of Hermie Castillo's 1 appearance on The Big Bang Theory.

  • The Planetarium Collision

    Season 12, Episode 5 - The Planetarium Collision
    Aired October 18, 2018

    When Amy doesn’t have time to work on super-asymmetry, Sheldon goes to great lengths to ensure she’s available to work with him even it if means accidentally sabotaging her career in the process. Also, Koothrappali doesn’t want Wolowitz to join him in hosting a show at the planetarium.

    Appeared as Colin

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