Bill Hader Voices the Cat in New Animated Adaptation of Dr. Seuss Classic

Warner Bros. Pictures Animation has released a new trailer showcasing its upcoming animated adaptation of The Cat in the Hat, bringing the beloved Dr. Seuss character to the big screen for the first time as a full theatrical feature.

Bill Hader takes on the voice role of the Cat, the mischievous protagonist who returns alongside familiar faces including the goldfish and the blue-haired Things. The film reunites directors Eric Rivinoja and Alessandro Carloni, known for their work on Trolls and How to Train Your Dragon 2 respectively, with a screenplay and story developed by Caroline Williams.

According to the studio's official description, the animated adventure follows the Cat as he embarks on his most challenging mission yet: lifting the spirits of siblings Gabby and Sebastian, who are struggling to adjust to life in a new town. Working as an agent for the I.I.I.I. (Institute for the Institution of Imagination and Inspiration, LLC), the Cat must prove his worth—or risk losing his magical hat—as he guides the children through a fantastical realm filled with wonder and chaos.

The voice cast extends beyond Hader to include Xochitl Gomez, Matt Berry, Quinta Brunson, and Paula Pell, with additional performances from Tiago Martinez, Giancarlo Esposito, America Ferrera, Bowen Yang, and Tituss Burgess.

The film is slated for an international release on November 4, 2026, followed by its North American debut in IMAX and standard theaters on November 6, 2026. This marks the animation studio's inaugural full-length feature film.