Mary Lynn Rajskub is an American actress and comedian, internationally known for her role as Chloe O'Brian, the CTU systems analyst in the action television series *24*. She portrayed the character in six seasons and the subsequent miniseries, *24: Live Another Day*, becoming one of the show's most iconic figures. Her career began in the 1990s in stand-up comedy and on sketch comedy shows such as *Mr. Show with Bob and David*. In film, she has appeared in movies like *Little Miss Sunshine*, *Punch-Drunk Love*, and *Safety Not Guaranteed*. Her television filmography also includes recurring roles in series such as *Brooklyn Nine-Nine*, *It's Always Sunny in Philadelphia*, and *The Dropout*. For her performance in *24*, she received two Screen Actors Guild Award nominations as part of the cast for Outstanding Performance by an Ensemble in a Drama Series.