Warner Bros' tenth theatrically released computer-animated film after The Polar Express (2004), The Reef (2006), The Ant Bully (2006), Happy Feet (2006), TMNT (2007), Beowulf (2007), Star Wars: The Clone Wars (2008), Astro Boy (2009), and Legend of the Guardians: The Owls of Ga'Hoole (2010).

Erica Schroeder's first voice-over role in an animated film that is not doing dubbed work.

Veronica Taylor's first voice over role in an animated film that is not dubbed work.

James Carter Cathcart's first non-anime voice acting appearance.

Stephen Fry's first time voice acting in a theatrical film, later he'd go onto voice Frazier the Crane in Duck Duck Goose (2018) and Lord Piggot-Dunceby in Missing Link (2019).