Once Orin of the Pilgrim Guard, The Emissary of the Nine is the main communication source between the enigmatic dark matter beings and humanity.

Her will is not wholly her own. She is a shell of the Guardian she once was, but perhaps not all of Orin is lost.

I wanted many things out of the nonary engrams. One of them was the Iron Axe Finisher. I begged to the RNG gods that if I got it I would make an Emissary bot... Here I am with finisher equipped.

Destiny 2: The Final Shape | Rite of the Nine