Biography

Keeley Karsten is an American actress who first gained recognition for her role as Natalie Fabelman in Steven Spielberg’s semi-autobiographical film, The Fabelmans (2022). In 2026, she starred as Leah, the sharp-witted daughter of Malcolm (Frankie Muniz), in the revival series, Malcolm in the Middle: Life's Still Unfair. Born and raised in New York City, Karsten’s passion for performance began on the stage. She notably starred in the world premiere of the play Summer Session with The Bones Brigade. Her transition to the screen was marked by early success in the short film On Being Twelve, for which she earned the Jury Prize for Best Young Actress at the Snow Leopard International Film Festival. Her additional television credits include a role in the Amazon original series Hunters, and the documentary series Evil Lives Here. In 2026, she also appeared in the series The Savant for Apple TV+ alongside Jessica Chastain. Karsten is a skilled singer. She also wrote and starred in her own short film, Viceroy. Karsten is a dedicated advocate for mental health, serving as an ambassador for Lady Gaga's Born This Way Foundation. She now resides in California.
- IMDb mini biography by: Viewpoint PR

Known for her ability to "break the fourth wall," a technique she mastered for her role in the Malcolm in the Middle revival.

Karsten is half Swiss on her maternal side.

Watching City Lights inspired her passion for film acting.

Karsten had never seen the original Malcolm in the Middle before landing the role of Leah; she binge-watched the entire series in just a few days to prepare for her chemistry read with Frankie Muniz.