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 with unraveling issues and Mantha, a zombie girl who keeps falling apart. When Casper discovers the two-headed headmaster's plot to use a petrification potion to turn Kibosh into stone and take over the Underworld and Deedstown, he and his new friends must stop him.

Devon Werkheiser
as Casper / Casper's Shadow (voice)

Brett DelBuono
as Jimmy (voice)

Jim Belushi
as Alder (voice)

Bob Saget
as Dash (voice)

John DiMaggio
as Stinkie / Frankengymteacher (voice)

Billy West
as Fatso / Figurehead (voice)

Dan Castellaneta
as Stretch (voice)

Kevin Michael Richardson
as Kibosh (voice)

Matthew Underwood
as Thatch (voice)

Christy Carlson Romano
as Mantha (voice)
r96sk
The second best follow-up to <em>'Casper'</em>, so... yeah. <em>'Casper’s Scare School'</em> arguably has the best plot of the four prequels/sequels, but remains hampered by the very poor animation - which, even for 2006, looks awful. I did recognise a few of the voices, including Kevin McDonald ...