![](https://image.tmdb.org/t/p/w92/qtp2bw9rokJ7OjG6o4JhvbpxcrA.jpg)
When Casper's been being friendly lately even when playing with a boy named Jimmy, Kibosh: The King of the Underworld has Casper enrolled into a Scare School headed by the two-headed headmaster Alder and Dash. He befriends Ra, a mummy …
Devon Werkheiser,
John DiMaggio,
Jim Belushi,
Billy West,
Dan Castellaneta,
Debi Derryberry,
Scott Menville
Added on HBO 2022-07-28.