Mira is a character chosen as an Offering in the tenth Offering. He was assigned to work in the "tech department" with electronics.
He was joined in the electronics lab by Hari in the eleventh Offering, and then Lumin Barrow in the thirteenth Offering. A couple of Offerings were assigned to work in the lab in the fourteenth Offering, but were not alive by the time Silver Blackthorn was assigned to work in the lab in the fifteenth Offering.
Mira was very quiet when Silver was assigned to work there and didn't talk much except to give Silver some advice.