Related Clues:

• Dangerous answer to a sentry
• Paris, to Romeo
• 'Them'
• ''Friend or ---?''
• Goliath, to David, e.g.
• Catwoman, to Batman
• The other team
• Hostile party
• Other side
• Attacker
• Opposition member
• Opposing side
• Combatant
• Friend's opposite
• Friend's counterpart