Related Clues:

• The Hatfields and the McCoys, e.g.
• ''Them''
• Sides in a long-running battle
• Sides in an ongoing battle
• The Blue and the Gray, once
• Sorts chicks
• Enemies
• They're not on your side
• Duel personalities?
• Us and them, maybe
• Grendel and Beowulf
• Adver-saries
• Two sides in a battle
• Genders
• They don't get along