Up Trivia Questions

Young Ellie was voiced by Elie Docter, daughter of director Pete Docter. She was only eight years old at the time and later became a voice actress for other Pixar projects.

Muntz is fictional, but he was partly inspired by real aviator and explorer Howard Hughes, and the lost explorer Percy Fawcett. No real person exactly matches Muntz's story of a giant bird hunt.

Pixar designers used a real Victorian house in Seattle's Queen Anne neighborhood as inspiration. The house was actually moved to a new location in 2006, not unlike Carl's flying journey.

Russell was present from early story development. Director Pete Docter wanted a child character to contrast with Carl's grumpiness and drive the emotional arc, not just for marketing.

Paradise Falls is based on Angel Falls in Venezuela, the world's highest uninterrupted waterfall. Pixar artists visited it for reference to capture the jungle and tepui landscape.

Dug's name was never changed for trademark reasons. However, in some international releases, the name was modified slightly for phonetic or cultural reasons, but not due to legal conflicts.

Pixar artists estimated 20,000 to 30,000 balloons for the lift. Real calculations by engineers suggest it would take over 100 million standard party balloons to lift a house, so 10,000 is far too few.

Early storyboards showed Carl and Ellie having a baby, but the filmmakers cut it to focus on their relationship and miscarriage subtext. The montage still took over a year to animate.