Shaggy Rogers (voice)
Daphne Blake (voice)
Velma Dinkley (voice)
Fred Jones / Scooby-Doo (voice)
Ghost of Amos Littlefield / Mr. Heaton (voice) / Bumpy / Duckman / Vampire (voice)
Jonathan / Scarecrow / Scary Man (voice) / McFinn / Salomon (voice)
Chip Braverton / Myles Kramer / Announcer (voice) / Husband / Officer Mike (voice)
Nate / Baker (voice) / Bones Malone / Mike (voice)
Dr. Mezmit / Alistair Leventhal / Tour Bus Guide (voice) / Morly (voice)
Soung (voice) / Mr. Moon / President Moon (voice)
Vandergrauff (voice) / Daughter / Edith / Mother (voice)
Saul Twinkelshine / Greg (voice) / Fortune Machine / Oopsy (voice)
Potter / Garrett (voice) / Dr. Buggly / Ghost of Christmas Yet to Come (voice)
Ed Johnson / Captain Anderson (voice) / Prison Guard #1 / Security Guard #1 / Security Guard #2 (voice)
Wendy Palloy / Parrot (voice) / Martha / Mother / Tommy (voice)
Brady (voice) / Business Woman (voice)
Archibald (voice) / Dave Mann (voice)
Mason / Eric (voice) / Bewildero / Johnny Cobra (voice)
Lord Morlack (voice) / Lydia (voice)
George / Mayor Riker (voice) / Miguel (voice)
Daniel Valentino / Mr. Sullivan / Announcer (voice) / Bayou Pierre / Dwayne (voice)
Bradwick / Headless Count (voice) / Duncan / Clive / Magician (voice)
Casper Cosgoode (voice) / Harmon / Madcap (voice)
Harvey / King Avery (voice) / Ravi / Stealin Stan / Prisoner 2 (voice)
