Mass Effect - Rebirth
Iris is a female Drell of few words.
Iris uses her race’s eidetic memory to recollect a vast array of medical information as a battle-field medic. Where she was trained, either medically or militarily, she doesn’t say.
She accompanied Dr. Ann Bryson and Gillian Grayson to the Omega nebula in pursuit of a mysterious individual just before the relays went down. They were subsequently captured by Black Star slavers, and ultimately rescued by a joint raid of Talaria and Cyeria stations, especially by Drala, who revealed to Iris that they were sisters.