The Ghostly Trio give Casper the Friendly Ghost a pill to make him as mean as they are.
Cecil Roy
Casper (voice) (uncredited)
Sid Raymond
Ghost #1 (voice) (uncredited)
Jack Mercer
Ghost #3 / Evil Casper (voice) (uncredited)
Jackson Beck
Ghost #2 (voice) (uncredited)
Kitty Foiled
Jerry's Cousin
Donald's Golf Game
Gone Fishing
Jerry and the Goldfish
Dog Trouble
How to Play Football
Yellow Mirror
Red Hot Riding Hood
Phineas and Ferb the Movie: Candace Against the Universe