Tatsumaki has a rather brash, moody, hotheaded, and impatient personality. She is disrespectful towards most people, especially to those she deems incompetent. She is completely intolerant to those she deems impertinent, as shown when she slammed Genos into a large piece of rubble for retaliating against her verbal abuse of Saitama. However, she did stop when Bang scolded her for her actions to him. Tatsumaki especially dislikes being ignored or being called things like "brat" and "runt".