Related Clues:

• Achilles and Hector
• The Bloods and the Crips, e.g.
• They're against you
• The North and South, in the Civil War
• Exes, sometimes
• You want to beat them
• They're not talking
• They aren't behind you
• Combatants
• Some are bitter or sworn
• They're opposed in war
• Ones to beat
• The bad guys
• Allies' antitheses
• Foes, opponents