Alex the Lion is a 2017 American-Canadian live-action/computer-animated/flash animation/CGI action-comedy science fiction spy by Warner Bros. Pictures, Warner Animation Group, Alcon Entertainment and Silver Pictures. From the spies behind The Lego Movie, The Ant Bully, Legend of the Guardians: The Owls of Ga'Hoole and Happy Feet.
- Ewan McGregor as Rodney Copperbottom
- Ben Stiller as Alex
- Jessica Chastain as Gia
- Jim Sturgess as Soren
- Patton Oswalt as Remy
- Elijah Wood as Mumble
- Ashleigh Ball as Rainbow Dash
- Scott McCord as Yang, Rainbow Dash's best friend.
- Ray Romano as Manny
- John Leguizamo as Sid
- Denis Leary as Diego
- Bob Peterson as Alpha, secondary villain.
- Heath Ledger as Joker, main villain. (last role)
- Nicolas Cage as Aaron Eshenbaugh/El Lightning Storm Macho
- Julia Roberts as Fran Kevin/Doctor Captain Robot Ninjago
- Gary Oldman as Gary Oldman/Doctor Victor Captain Thunderstorm
- Shia LaBeouf as Shia LaBeouf/Apple Blue Thunderstorm Vector
- Jim Parsons as Jim Parsons/Vector Captain Robot Eagle
- Hank Azaria as Aaron "Linnux" Magnet