Hannah is an introverted and withdrawn person; she often has her head tilted down as a way of avoiding eye contact with others. Hannah appears to be terrified of her master, Alois Trancy, and is calm and reserved, except for the moments in which he is speaking to her. In these moments, she is brisk, nervous, and will even tremble with fear. However, during her duel with Sebastian Michaelis, Hannah displays great confidence in herself and openly mocks Sebastian for taking the time to fix his clothes.

Hannah is extremely loyal to Alois; she is willing to be being beaten by him and goes as far as removing almost all of her clothing when he wanted to use her clothes for a costume. Her biggest ambition is to provide Alois with happiness, and thus, she endures his abuse.