In the film, he is voiced by Devon Werkheisher who portrays Ned Bigby from Ned's Declassified School Survival Guide. In the series, he is voice by Matthew Geczy. For being friendly most of the time in his afterlife, Casper is force to be in rolled for Scare School by Kibosh. The school was head by the two-headed, Alder and Dash, who secretly plans to over throw Kibosh. Casper then met up with new friends: Ra and Mantha and has a rivalry with Thatch.