Rio the Wolf is a Husky from the Siberian mercenary group, Echo Group. She and her friend Aurora, another Husky, have had a decorated career as soldiers/assassins for hire. Rio was in the private company for a longer time, and even saw the terrorist attack carried out by Konni Group in an airport. Knowing their leader, Makarov, she and others called him a disgrace to his country, and even accepted jobs from the west to kill him. The west got to Makarov first, much to Rio’s delight.