• Addicts
• Beastly sorts
• Buffs
• Cruel villains
• Demons
• Devils
• Diabolically wicked ones
• Infernal types
• Mad Ben
• Maniacs
• Monsters
• Monsters and maniacs
• Mr. Hyde and his ilk
• Ogres
• Troublemakers
• Up-to-no-goodniks
• Wicked ones