Natsuo is above average height, sporting white spiky hair, with two short strands hanging down either side of his forehead. He has a muscular build.
Natsuo has an easygoing personality. He cares deeply for his family and exhibits his serious side when dealing with sensitive family topics. Natsuo resents his father for his abusive actions; holding him accountable for the forced separation from Shoto as a child, Rei's hospitalization, and an unspecified incident involving Toya.
Natsuo and Fuyumi Todoroki visit their mother in the hospital. He tells his mother that Endeavor was promoted to No. 1 and that he still cannot forgive his father for how Enji treated the family. He is surprised when his mother mentions the latter visits her and left her flower. He is told of his father is dealing with an internal problem.
While leaving the asylum with Fuyumi, the siblings watched a news report of their father dealing with a villain attack. He was horrified to watch as his father was overwhelmed by a villain's attack.
Natsuo continued to watch the broadcast wondering why Endeavor continued fighting. He frantically stated that he should just give up and retreat like he did with the children he had. Fuyumi told him their father is the person who is too stubborn to ever do so.
At his family home, Natsuo eats dinner with his sister and brother Shoto before their father arrives. Seeing him, Natsuo glares at him especially at his scar before Fuyumi tells them to told Natsuo to speak up and the latter confronted his father on everything he's done even blaming him for what happen to his brother Toya. Natsuo continues his rant about not knowing much about his brother Shoto because of him and ending it by saying he's incapable of change only to be surprised by Enji stating he will face his past to atone before Natsuo leaves.
- Natsuo's name contains the kanji for "summer" (夏?) and "masculine" (雄?).
- Natsuo feels sensitive towards warm weather.
- He also shares his birthday with Hitoshi Shinso.
- His favorite things are sashimi and the sea.
- Natsuo’s currently studying medical welfare
- ↑ 1.0 1.1 1.2 1.3 1.4 My Hero Academia Manga: Chapter 187 (p. 1-5).
- ↑ My Hero Academia Manga: Chapter 192.
- ↑ My Hero Academia Manga: Vol. 21.