Related Clues:

• Challenger, to a champion
• Rival soldiers retreating in case of emergency
• Parts of Mr. Clean and Lex Luthor costumes
• Loki, to Thor
• Good guy, to a bad guy
• Adversary in Yemen out of order
• Shirts, to skins
• Hostile force in unstable Yemen
• Word from the Latin for ''unfriendly''
• Doctor Doom, to the Fantastic Four
• Cheetah, to Wonder Woman
• Home team, to the away team
• Them, vis-à-vis us
• Them, vis-Г -vis us
• One not with you