SAC_2045* operate collectively in functional roles like assisting Togusa with investigations, uploading video feeds, providing combat support, and transporting personnel. The series does not present a distinct unit designated "Tachikoma A" with individualized traits, background stories, or development arcs. While earlier *Stand Alone Complex* media explored Tachikoma characteristics such as AI synchronization and emergent individuality, *SAC_2045* references remain generalized to operational use without singling out or detailing any specific unit labeled "Tachikoma A".