defiler

adversary agent antagonist attacker bandit competitor criminal detractor foe guerrilla invader murderer opponent opposition prosecutor rebel rival spy terrorist traitor villain

assailant assassin backbiter betrayer contender defamer disputant emulator falsifier informer inquisitor revolutionary saboteur slanderer traducer vilifier

archenemy asperser bad person calumniator fifth column other side seditionist

ally associate friend helper law police supporter

aide assistant confidante

betrayer debaucher despoiler raper ravisher

ravager