Be Cool, Scooby-Doo! season 1 villains

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  Alien (Area 51 Adjacent)

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  Wayne Bowman
• 
  Butler 3000

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  Carli (Poodle Justice)
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  Jasper Crawl
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  Crystal Crawler
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  Dr. Cutler

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  Dahlia (All Paws on Deck)
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  David (Scary Christmas)
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  Donald (The Norse Case Scenario)
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  Dwayne (Saga of the Swamp Beast)

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  Edith

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  Gargoyle (Poodle Justice)
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  Gentleman Bandit
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  Ghost of Chip Braverton
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  Ghost of Elias Kingston (Be Cool, Scooby-Doo!)
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  Ghost of Stealin' Stan
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  Ghost of the Cliff Bride
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  Ghost of the Prima Donna
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  Giant (Giant Problems)
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  Gremlin (Gremlin on a Plane)
• 
  Gustavo

• 
  Bradwick Haverall
• 
  Headless Count
• 
  Jeff Howard

• 
  Ed Johnson
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  Jonathan (Eating Crow)

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  Kimmy's mother
• 
  Dayton Knight

• 
  Alistair Leventhal
• 
  Ruby and Trudy Lutz

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  Madcap
• 
  Madcap the Killer Clown
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  Chuck Mangum
• 
  Ranger Mark
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  Colson McCready
• 
  Colin McQuaid

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  Nate's mother

• 
  Mallory O'Neill
• 
  Oopsy

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  Phantom (Where There's a Will, There's a Wraith)
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  Piero
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  Pterodactyl (Scary Christmas)

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  Professor Salasar
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  Scarecrow (Eating Crow)
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  Sea creature (All Paws on Deck)
• 
  Joe Simons
• 
  Mitchell Simons
• 
  Snow monster (Be Cold, Scooby-Doo!)
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  Sobek
• 
  Sorcerer (Sorcerer Snacks Scare)
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  Spirit of El Bandito
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  Spirit of the Zatari Warrior
• 
  General Stall
• 
  Stealin' Stan
• 
  Swamp monster (Saga of the Swamp Beast)
• 
  Heidi Ho Swift

• 
  Thorn (All Paws on Deck)
• 
  Old Tom
• 
  Toxic Mutant

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  Viking ghosts (The Norse Case Scenario)

• 
  Dustin Wallswreath

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  Yeti (Kitchen Frightmare)