Kristen Bell has established a significant career as a voice actor in animated films and television series. She is recognized for bringing a range of characters to life, most notably Princess Anna in Disney's Frozen franchise. In a notable upcoming role, she has been cast as the voice of Amy Rose in the feature film Sonic the Hedgehog 4, a part of the popular series based on the Sega video game franchise.

Bell's career in voice acting includes several major roles in high-profile animated productions. She is best known for her work with Walt Disney Animation Studios, where she voiced the spirited and optimistic Princess Anna in the 2013 film Frozen. She reprised this role in the sequel Frozen II (2019), as well as in various related shorts including Frozen Fever (2015) and Olaf's Frozen Adventure (2017), and in the feature film Ralph Breaks the Internet (2018). Her performance as Anna required both speaking and singing, contributing to the film's widespread popularity. Another significant Disney role was providing the voice for Priscilla, a slow-moving sloth, in the animated feature Zootopia (2016).

Beyond Disney, Bell's voice work includes the role of Hiromi in the English dub of the Studio Ghibli film The Cat Returns (2002). She also provided the narration for the hit television series Gossip Girl throughout its run from 2007 to 2012. Her other television voice credits include guest roles on long-running animated series such as The Simpsons and the Netflix animated comedy Big Mouth.

Kristen Bell has demonstrated recurring collaborations with several major studios. Her work with Disney Animation is extensive, spanning over a decade and multiple projects. She has also worked with Paramount Pictures on the Sonic the Hedgehog film series. In television, her collaboration with the producers of Gossip Girl established her as the iconic unseen narrator of the series.

Among her notable achievements in voice acting, her role in Frozen stands out as a cultural phenomenon. The film won the Academy Award for Best Animated Feature and became one of the highest-grossing animated films of all time. For her performance, Bell received a nomination for a Teen Choice Award for Choice Movie Actress: Action in 2014. Her ongoing success in both live-action and voice roles has made her a prominent figure in family entertainment, leading to projects such as providing her voice for a Meta AI chatbot in 2024.