Architect begins as a foundational artificial intelligence for the Frame Arms Girls, sharing this core role with the Materia Sisters. Initially existing without a physical body, she manifests solely during specific combat situations to execute her programmed directives. This changes definitively after a battle against Gourai and Jinrai; her defeat triggers the creation of a permanent physical form, leading to her integration into Ao's household.

Her physical design presents white hair fading to purple tips, expressive sky blue eyes, and a slim physique. She wears a revealing gray and black outfit accented with light blue, featuring a short dress, long gloves, boots, and a protective helmet. The design incorporates universal 3mm attachment points compatible across Kotobukiya's model lines, enabling extensive armor and weapon customization. Articulated joints facilitate diverse posing. A variant model kit depicts her armor in black and gunmetal, utilizing pre-painted face plates conveying expressions like seriousness, amusement, and slight smiles.

Emotionally detached compared to other Frame Arms Girls at first, she demonstrates strong capacities for logical analysis and information retrieval, functioning as a walking database. While her emotional range remains limited, subtle developments emerge through interactions within Ao's group. Her combat abilities include self-replication and physical transformation, remolding her form as needed. Weapon systems typically integrate robotic components such as exoskeletal arms, claws, and drills.

In *Kyakkyau Fufu na Wonderland*, a recap film containing minimal new footage, Architect appears. Her established characteristics and role remain consistent with the television series.