Related Clues:

• Batman and Robin, to Catwoman
• Bugaboos
• Foes
• Causes of ruin
• Fierce foes
• Curses
• Nemeses
• Formidable rivals
• Sources of annoyance
• Ruinations
• Harmful things
• Unbeatable archenemies
• Sources of suffering
• Holmes and Moriarty, e.g.
• Usually unbeatable rivals