Mary Elizabeth Ellis began her love for acting as a child in the local theatre of Laurel, Mississippi, and that love drove her to attend Meadows School of the Arts at Southern Methodist University. Upon graduation, L.A. was calling. Ellis continued studying acting as well as improvisation at the infamous Upright Citizen's Brigade Theater.
Ellis recurs on the Netflix series Santa Clarita Diet with Drew Barrymore and Timothy Olyphant. Recently she costarred on the FOX single-camera legal comedy The Grinder opposite Rob Lowe and Fred Savage. She is also known for her hysterical recurring role as “The Waitress” on FXX’s hit show It's Always Sunny in Philadelphia, which she began working on in its infant stage in their apartment seven years ago. She has starred as “Amy” in the NBC single-camera comedy Perfect Couples and recurred on Fox’s New Girl playing the character of “Caroline”. Ellis also recurred on the ABC comedy Happy Endings and played roles on Drunk History and Comedy Bang Bang.
On the feature front, you can see her in Masterminds, in which she plays Owen Wilson’s scene stealing wife “Michelle”. She plays a confederate woman “Margaret” opposite Matthew McConaughey in The Free State of Jones. She also starred in the indie The Last Time You Had Fun which premiered at the Los Angeles International Film Festival. She co-wrote and starred in the independent film, A Quiet Little Marriage, which won The Grand Jury Prize at Slamdance Film Festival.
In addition to acting and writing, Ellis loves drawing, working with Well Aware which digs wells in East Africa and PSArts which provides arts programs in Public Schools. She currently resides in Los Angeles with her husband, son and dog.