Related Clues:

• Someone opposing environmentalists
• Coetzee's first fictional offering exceptional? He is opposed
• Archaic 'Curses!'
• Mothra or MUTO, to Godzilla
• Anti matter?
• Enemy coming from eastern Foreign Office first
• Enemy in war
• Enemy force ignoring Red Cross
• Rival fooled in odd places?
• The Red Baron, to Snoopy
• Aaron Burr, to Alexander Hamilton, at least that one time
• Philistines, to the Israelites
• Adversary with golfer's shout not right
• One alternative of a sentry's challenge
• The Riddler, to Robin