Cast[]
- Spike (Rugrats) as Scooby-Doo
- Chuckie Finster (Rugrats) as Shaggy Rogers
- Porkchop (Doug) as Scrappy-Doo
- Harold Berman (Hey Arnold!) as Freako
- Carl Wheezer (The Adventures of Jimmy Neutron: Boy Genius) as Meako
- Sheen Estevez (The Adventures of Jimmy Neutron: Boy Genius) as Shreako
- Elke (The Adventures of Jimmy Neutron: Boy Genius) as Sadie-Mae Scroggins
- Lou Pickles (Rugrats) as Beauregard's Ghost
- Roger Klotz (Doug) as Horseless Horseman
- The Phantom of Retroland (The Adventures of Jimmy Neutron: Boy Genius) as Skull Ghost
- Chuck Lester (The Adventures of Jimmy Neutron: Boy Genius) as Farquard
- Chester McBadBat (The Fairly Odd Parents) as Billy-Bob Scroggins
- Skrawl (Chalkzone) as Floating Skeleton
- Bear (The Adventures of Jimmy Neutron: Boy Genius) as Bear
- Miranda Sanchez (As Told by Ginger) as Witch
- Paul the Monkey (The Adventures of Jimmy Neutron: Boy Genius) as Ape
- Bueford Lee Stormshuckle (The Adventures of Jimmy Neutron: Boy Genius) as T.J Buzby
- Officer Tubbs (The Adventures of Jimmy Neutron: Boy Genius) as Rufus Buzby