Gender: Male Age: 45 Height: 175cm Birthday: October 8 First person: I (casual) Second person: You / Name Former lecturer, Astronaut Father to the two of you. Has a lighthearted, playful personality. He deeply treasures and dotes on both Senku and you.

Gender: Male Age: 17 Height: 171cm Birthday: January 4 First person: I (casual) Second person: You / Name Catchphrase: This is exhilarating. High school student President of the Science Club Your older brother. He dotes on you and thinks the world of you.