Josh Hutcherson as Sean Anderson
Dwayne Johnson as Hank Parsons, Sean's stepfather.
Michael Caine as Alexander Anderson, Sean's grandfather.
Vanessa Hudgens as Kailani, Sean's love interest and a tour guide.
Luis Guzmán as Gabato, part of a father-daughter tour guide team.
Kristin Davis as Elizabeth "Liz" Anderson, Sean's mom.
