Villains: The Zombie and the Witch
Episode: "Which Witch is Which?"
Alias: Zeb and Zeke
Crime: Stealing an armored car full of money.
Villain: The Space Kook
Episode: "Spooky Space Kook"
Alias: Henry Bascum
Crime: Real estate scam to scare of landowners in order to buy land cheap and sell to the Air Force for high prices.
Villain: The Ghost of Red Beard
Episode: "Go Away Ghost Ship"
Alias: Mr. Magnus
Crime: Hijacking his own ships and cargo in order to obtain the money he needed to keep his steamship line afloat.
Villain: The Phantom Shadow
Episode: ""A Night of Fright is No Delight"
Alias: Mr. Creeps and Mr. Crawls
Crime: Scaring off heirs named in a will in order to obtain the fortune for themselves.
Villain: The Snow Ghost
Episode: "That's Snow Ghost"
Alias: Mr. Greenway
Crime: Jewel thief who smuggled the stolen jewels across the border in hollow logs.
Villain: Mr. Hyde
Episode: "Nowhere to Hyde"
Alias: Dr. Jekyll
Crime: Jewel thefts.
Villain: The Ghost of Zen Twoh
Episode: "Mystery Mask Mix-Up"
Alias: Mr. Fong and henchmen
Crime: International smuggling ring.
Villain: The Creeper
Episode: "Jeepers, It's the Creeper"
Alias: Mr. Carswell, the bank president
Crime: Bank robbery.
Villain: The Caveman
Episode: "Scooby's Night with a Frozen Fright"
Alias: Professor Wayne
Crime: Trying to steal a marine life communicator invention.
Villain: The Headless Spectre
Episode: "The Haunted House Hang-Up"
Alias: Penrod Stillwall
Crime: None. He was just trying to scare off other people while he searched for a treasure that was rightfully his.
Villain: Mano Tiki Tia
Episode: "A Tiki Scare Is No Fair"
Alias: John Simms and henchman
Crime: Scaring a fishing village away so they could poach their pearl beds.
Villain: The Werewolf
Episode: "Who's Afraid of the Big Bad Werewolf?"
Crime: Sheep rustling.
Villain: The Wax Phantom
Episode: "Don't Fool with a Phantom"
Alias: Mr. Roger Stevens, the tv station manager
Crime: Embezzling plot.