MP40 is professional, first and foremost. Bit of a hardass and never backs down. She is fiercely loyal to the commander. As a secretary she can be found reprimanding and pulling rank on younger dolls, she seems to also have a bit of a self-confidence issue and tends to be fidgety around the Commander Her being a stickler for rules belies a tender, affectionate personality underneath. She has a knack for playing the piano, and enjoys singing in her off hours.