King has also appeared in the films Battle: Los Angeles (2011), Crazy, Stupid, Love (2011), The Dark Knight Rises (2012), The Conjuring (2013), White House Down (2013), Independence Day: Resurgence (2016), and Going in Style (2017), as well as in the FX black comedy series Fargo (2014–2015).

"[4][5] As a child, she sang a cappella for a talent show at the Simi Valley Cultural Arts Center[6] and performed with the Stage Door Children's Theatre in Agoura.

King voiced the yellow fur ball Katie in the animated feature Horton Hears a Who!

Other television appearances include Jericho, Entourage, CSI: Crime Scene Investigation, Medium and Life in Pieces.

She also appeared in Taylor Swift's "Mean" music video as a young student at the school cafeteria rejected by her peers.

[9] King had a role in Christopher Nolan's third Batman film, The Dark Knight Rises (2012), as a young Talia al Ghul.

[17][18] Her performance in The Act earned her nominations for Emmy, Golden Globe, SAG and Critics' Choice awards.

[24] King began a relationship with producer and director Steven Piet in 2019 after they met on the set of The Act.

[28] At the 2015 Vancouver International Film Festival, the Canadian Images features jury made an honourable mention recognizing King as an Emerging Actress for her performance in Borealis.