A crossover Halloween special episode featuring characters from OK K.O.! Let's Be Heroes and Scooby-Doo and the Ghoul School.
Phantasma (voice)
Elsa (voice)
Sibella (voice)
Tanis (voice)
Winnie (voice)
Enid (voice)
Rad (voice)
Bernard/Tree/Spanky (voice)
KO (voice)
Wilhamena (voice)
