Bronya is emotionally stunted as a result of Project X-10, speaking in a deadpan tone with a matching expression. Bronya rarely shows empathy or acts in accordance with others. Despite this, she adores both the HOMU franchise and Seele, and sympathises with Wendy. When she became the Herrscher of Reason, the Core of Reason repaired both her legs and brain, allowing her to walk and feel the emotions she had lost. She has a grown-up personality, and a very logical way of thinking.