Casper's First Christmas is a television special produced in 1979 by Hanna-Barbera, a crossover that features Casper the friendly ghost and Hairy Scary (from "Casper and the Angels) and guest characters such as Yogi Bear, Boo-Boo, Huckleberry Hound, Snagglepuss, Quick Draw McGraw, and Augie Doggie and Doggie Daddy.
Casper and his friend Hairy Scary are in a house about to be demolished on Christmas Eve and go out to look for a new place to move to after Christmas in California. Then Yogi and his friends get lost and arrive at Casper and Hairy's house and clean and decorate it to celebrate Christmas. Then Casper befriends Yogi and company only for Hairy to try to ruin the party with Casper and his new friends. Then Hairy has a change of heart and celebrates Christmas with Casper and his new friends and ending with Santa Claussaving the house and turning it into Hairy's Haunting Lodge.