Reko seems intimidating, assertive, and "rough around the edges," especially in comparison to her milder female companions such as Nao and Kanna. However, she's generally friendly and takes on a sisterly role for those younger than her. She seems to act kinder to those who may be seen as "weak." This is shown when Reko immediately comforts Kanna when hearing about her sister and treats her more gently. This, however, was not part of her personality before Alice was arrested for murder.