6. Captain Price & Makarov (Call of Duty: Modern Warfare 2)
From his first introduction in Call of Duty: Modern Warfare 2, players knew that Ultranationalist leader Vladimir Makarov was not to be trusted. Spearheading a brutal attack on a Moscow airport proved he would go to any lengths; but for all his brutality, Makarov was far too driven and controlled to be deemed insane. So when the real villain of Modern Warfare 2 emerged, Captain John Price’s elite unit had no choice but to let Makarov live to fight another day, in exchange for eliminating an enemy even more crazed than he. Price and Makarov settled their dispute for good in Modern Warfare 3, but their brief truce showed that even despicable enemies could prove valuable at times.