Architect

Long-Range Combat Doll, Model SPzH3000. Skilled at long-range destruction and fire support. She has very high combat power and frequently operates alone. She's a cheerful, brainlet genki girl who is constantly in high spirits. She holds no enmity towards Griffin forces and is only minimally obedient to Sangvis Ferri orders. However, she is extremely passionate about explosions and destroying things, so she remains a very dangerous opponent.

She is the second Ringleader to carry a large size multi-weapon, similar to Gager, the other Ringleader she is partnered with... However Architect's weapon appears to be somewhat self assembled, based on visual observations, the front end of her weapon is actually a Prowler unit without the chassis, except the optics is modified into a warhead launcher.

(Source: Girls' Frontline Wiki)