ST AR-15 is a calm and steady individual, she has a high sense of responsibility but she is self conscious about her being a civilian weapon, due to this she craves for glory and honour.
She often has different thoughts to the rest of her squad during operations, she prefers to do her own thing, which can result in conflicts in opinions. However she values friendship and her companions, it angers her to see her AR team member to be hurt, to an extend of losing sense of logic out of retaliative thoughts.
As a main story character and as a member of AR team, ST AR-15 have major interacted with both the main and side story of Girls Frontline.
Digimind Upgrade Story: AR-15
There's a mission tomorrow, and it would be the first, official one. AR-15 decided to sleep early. She couldn't, though, and decided to went over the mission summary for one more time instead of wasting her time. AR M16A1M16A1 and AR M4 SOPMOD IIM4 SOPMOD II were sleeping soundly, but AR M4A1M4A1 wasn't there. The door was slightly ajar, and AR-15 found that M4 was in the same situation as her. The two had a talk about a lot of things. Their worries for their first mission, their anxiety, etc. After a while, they decided to call it a day.
Warning messages filled her ears. Low on ammo and power, AR-15 was in critical state after blowing herself up. She complained and compared herself to M4, though nothing would change and she couldn't do anything. There's annoying voice suddenly reached her ears. The voice said that it will bring her back and talk. With that, her remaining power reached zero.
In a certain workshop, Sier greeted SMG UMP45UMP45 after she came back from her mission. She brought AR-15 along with her, and gave her a present. UMP45 told her to install it, though it wasn't for free. AR-15 told her that she never asked to be saved, but UMP45 only carried her mission given by the employer.
In a certain safehouse, a doll was all geared up to carry out her mission. She asked her handler to hurry up and gave her the orders.
- The Art of Girls' Frontline Vol.1, AR Team, page 195-196, ST AR-15