Norma MacMillan was a Canadian actress, best known for voicing numerous characters in animation and claymation, including Casper the Friendly Ghost on The New Casper Cartoon Show, Gumby on The Gumby Show, Sweet Polly Purebred on Underdog, and Davey on Davey and Goliath.

Casper the Friendly Ghost is the fictional character who serves as the protagonist of the Famous Studios theatrical animated cartoon series of the same name. He is a translucent ghost who is pleasant and personable, but often criticized by his three wicked uncles, the Ghostly Trio.