Watch Online Free FlixHQ. Casper And Wendy's Ghostly Adventures. Casper the friendly ghost to the rescue! The night is Halloween, the night when witches, goblins and ghosts howl and shriek and scare the life out of you! But unlike the other ghosts, there's Casper. He doesn't want to scare people, he just wants to be friends! Join Casper and his ghoul-friend Wendy, Spooky and the infamous ghostly trio as you take a journey through the classic 1950s cartoons.