"A crossover Halloween special featuring characters from OK KO! and Scooby Doo and the Ghoul School"
Russi Taylor
as Phantasma (voice)
Pat Musick
as Elsa (voice)
Susan Blu
as Sibella (voice)
Kristin Li
as Tanis (voice)
Natalie Palamides
as Winnie (voice)
Ashly Burch
as Enid (voice)
Ian Jones-Quartey
as Rad (voice)
Dave Fennoy
as Bernard/Tree/Spanky (voice)
Courtenay Taylor
as KO (voice)
Melique Berger
as Wilhamena (voice)
Writer
Toby Jones
Co-Executive Producer
