During his youth, HERO is the peacemaker of the group, who tries to restrain his friends whenever they get too worked up. He is described as having a mild personality and passionate about domestic work like baking, cooking, and cleaning, making him an ideal employee. HERO also has a charismatic side that he uses to charm others. His charisma allows him to convince others to go along with his requests, get discounts from MAILBOX and befriend animals like EMS. However, he can sometimes be a pushover when confronted and has difficulty refusing others. He also appears to have arachnophobia (an irrational fear of spiders) to the point of freezing up completely.

HEADSPACE HERO has a mild personality. Being the oldest, he is the role model of the group and therefore has more of a mature tone compared to his friends.

HERO is around 15 years old. His voice can be anywhere from low to medium pitched, but he should not sound like an adult. 

His REAL WORLD counterpart is HERO.