When a little Martian boy playing hooky crashes his "borrowed" saucer into the house, Casper shows him around, but the Martians are convinced that the saucer was stolen by humans and declare war on the Earth.
The Trio see Casper reading a book about insects and decide if they could become tiny, they could spook all the insects in the Enchanted Forest. Fatso tricks Casper into getting them some magic reducing pills from the witches.
Wendy's aunts and Casper's uncles magic up mischievous twins of Casper and Wendy to cause trouble around the Enchanted Forest
A boatload of Pilgrims is attacked by a sea monster and Casper tries to help them.
Casper meets his cousin, Spooky and befriends him. That night, Spooky gets frightened by strange noises and Casper wants to protect Spooky.
Casper settles a war between the Blue King and the Red King.
Casper's lookalike - but big and muscular - cousin Powerhouse drops by for a visit, and they team up to scare the Ghostly Trio into ending their bullying ways.
Hesus Resurreccion, a total scaredy cat who lives with his social-climbing aunt and two rowdy cousins, inherits an abandoned mansion. Coincidentally, the said location serves as a portal to the afterlife for the stranded ghosts, and they know that Hesus is "The One" who would open it. If he didn't, the ghosts would turn into cockroaches.
A disgraced reporter investigates an abandoned luxury hotel where five people mysteriously disappeared sixty years earlier.
Born in the 1890s to an affluent family, Abigail grows up surrounded by the care and concern of her four devoted grandparents. In her twenties she falls in love with Thomas, a poor piano tutor her overprotective grandparents decide is not good enough for their darling Abigail. They may be ghosts only Abigail can see, but these ancient apparitions can still do some serious damage to her romantic prospects.
Casper befriends Junior Pig and confronts the Wolf.
There's good boos tonight: Frightday the 13th. All the ghosts plan on going out to scare someone... except for Casper the Friendly Ghost, who goes out and makes friends with Lucky the black cat.
Casper, the Friendly Ghost, is thrown out of The Frightening Army by its Unfiendly Ghost's members, and wander on over to Fairy Tale Land, where he finds Little Bo Peep crying over her lost sheep.
Casper the Friendly Ghost helps Little Feather go hunting.
Casper, the always friendly and friend-seeking ghost, is in Holland where little Hans is a willing playmate as he does his chores.
When Spooky learns that Casper has a date with Wendy to the beach instead of playing baseball, he plays tricks on them.
Zero the Dog, already a failure as a bloodhound or a retriever, is just as bad as a watchdog, and is frightened when a burglar appears. Casper the Friendly Ghost, unknown to Zero, comes to his aid and frightens the burglar away. Zero thinks he did it on his own, and gains back all of his lost self-respect.
Casper the Friendly Ghost doesn't like to haunt and wishes he could be in Mother Gooseland.
Casper, the Friendly Ghost, who does not like scaring people, is hauled up before the Ghost Tribunal and is quickly convicted of Friendship-in-the-First Degree and is booted out of the local ghost community.
Little Billy wants to play pirates with two older friends. However, the big kids won't let him play. He meets up with Casper, and the two build a raft together and sail out to to sea to search for pirate treasure... and find it.