That's not how the Destiny universe works. Every player is viewed as the same person by npc's.
English
-
That's the same with the grim, whenever we're mentioned we're not mention as a group, only one player. That's why it'll always say "you defeated xyz" not "they defeated xyz" (in reference to the player). There's not a single passage in the grim that outlines "the guardian" (us) as more than one person.