Courtney Healy Henggeler ( born December 11, 1978) is an American former actress known for her starring role as Amanda LaRusso in the Netflix comedy-drama television series Cobra Kai. She is also known for playing Sheldon Cooper's twin sister, Missy, in The Big Bang Theory.
Early life and education Born on December 11, 1978, in Phillipsburg, New Jersey, Henggeler grew up in Pennsylvania in the Poconos until she moved to her parents' hometown of Seaford, New York, on the South Shore of Long Island at age 14. After graduating from Seaford High School, Henggeler enrolled at SUNY Fredonia but dropped out and moved to Los Angeles two years later, where she received her first acting lessons. Henggeler credits her childhood best friend Patti for making her audition for a high school production of Carousel when Henggeler was in the ninth grade.
Career 2003–2025
Henggeler started her acting career with a main role in the horror B-movie The Bog Creatures in 2003. Two years later, she made a guest appearance in the medical drama House.
In 2008, and again in 2018, Henggeler took on the guest role of Missy Cooper, the twin sister of Sheldon Cooper, in the sitcom The Big Bang Theory.
After other guest roles in various movies and TV shows over the years and a recurring role on the CBS sitcom Mom, Henggeler made her breakthrough in 2018 when she landed a starring role on Cobra Kai as Amanda LaRusso, the wife of the original Karate Kid Daniel LaRusso. In 2019, Henggler was featured in Hulu's episodic holiday horror series Into the Dark.
In April 2025, Henggeler announced her retirement from acting.
Personal life Henggeler married Ross Kohn in October 2015. They have two children. She is of Italian, Swiss-German and Irish descent.
Filmography Film Year Title Role Notes 2003 The Bog Creatures Susan Beth 2005 The Legacy of Walter Frumm Maid 2009 Two Dollar Beer Molly 2010 True Love Alexa Peas in a Pod Julie Wing Bitches Courtney 2011 Friends with Benefits Flight Attendant 2012 Hitting the Cycle Samantha 2013 Kristin's Christmas Past Sophia 2014 Beach Pillows Courtney 2017 Fixed Maria Feed Kate 2018 Nobody's Fool Hillary 2019 Pilgrim Anna Do Not Reply Laura 2023 The Boys in the Boat Hazel Ulbrickson
Television Year Title Role Notes 2005 House Server Episode: "DNR" 2008, 2013, 2018 The Big Bang Theory Missy Cooper 3 episodes 2008 Criminal Minds Jenna Episode: "The Crossing" 2009 Roommates Anna Episode: "The Trash 'N Treasures" NCIS Scorpio Sinn Episode: "Reunion" Accidentally on Purpose Dani Episode: "Class" 2011 Working Class Rachel 3 episodes Happy Endings Andrea Episode: "The Quicksand Girlfriend" Melissa & Joey Bianca Episode: "The Mel World" Family Practice Chelsea sloop Television movie 2013 Back in the Game Keeley 1 episode 2013–2015 Mom Claudia 5 episodes 2014 Royal Pains Nancy Conrad 1 episode Franklin & Bash Molly Taylor 1 episode Faking It Robin Booker 2 episodes The Mysteries of Laura Nora 1 episode 2015 Stitchers Suzanne Parks 1 episode 2016 Mary + Jane Mandy 1 episode Henry Danger Gwen Episode: "Love Muffin" Bones Dr. Jane Levy Episode: "The Death in the Defense" 2017 Escaping Dad Stacy Hanson Television film 2018 Jane the Virgin Satchet Episode: "Chapter Seventy-Eight" 2018–2025 Cobra Kai Amanda LaRusso Main role 2018 Fuller House Renee Episode: "Driving Mr. Jackson"2019Into the DarkAnna Episode: "Pilgrim"
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