Rumi Usagiyama / Miruko

Personality Rumi Usagiyama placed a lot of stock in physical power and combat, which makes her a powerhouse. Nothing thrilled her more than a bare-knuckled fight between herself and skilled opponents where each person was trying their hardest to defeat their opponent. She showed respect and appreciation to those with similar beliefs such as the cage fighter Kendo Rappa. Personal strength was just as important to Mirko as a willingness to fight, as she would occasionally show disdain to those who fought in teams rather than by themselves as relying on the strength of others was a sign of weakness in her eyes.

Mirko was something of a social non-conformist who spoke her mind regardless of the situation and seemingly didn't care about the consequences. She also appreciated people who did the same, as she expressed admiration when Hawks controversially spoke his mind during the Japanese Hero Billboard Chart. She was a newer type of hero who travelled across the country rather than having a base-of-operations, further demonstrating her free spirit. In her early teenage years, her attitude tended to get her into trouble, as she would mostly follow her whims regardless of whether it got her into danger or not. That being said, by the time she was in high school, she had mentally matured slightly, as she would at least try to hide her identity when following her desires into dangerous situations.

While in hero school, Usagiyama seemed to believe that all a person needed to be a hero was power. Despite this rather crude mindset, Mirko was seriously dedicated to her hero work. Although she seemed fairly inconsiderate of others, Rumi would make sure to protect people, even at the cost of her own wellbeing. Her dedication to justice was so fierce that she honestly didn't mind if her hero work was to one day take her life. She was also willing to throw away her pride and work with others during times or crisis as she recognised that helping people was more important than her own personal feelings.