Wataru Amanogawa is a Juban High School science teacher and astronomer who features only in the 1990s Sailor Moon Stars anime. When his Star Seed is torn out he is transformed into the enemy known as Sailor Teacher.
The series shows Amanogawa in a younger incarnation whose features call to mind Mamoru Chiba, a resemblance viewers have noted. Beyond that youthful likeness, little else is spelled out about his everyday look.
His life revolves around the sky. He teaches science while also working as an astronomer, and the celestial theme even runs through his name: the given name evokes navigation, while the surname strings together characters for the heavens, a field, and a river, echoing the Japanese term for the Milky Way.

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Amanogawa works at Juban High School during the events of the final anime season. His story turns when his Star Seed is torn from him, an act that warps him into the antagonist Sailor Teacher. A footnote of real-world trivia attaches to him as well: a genuine comet, 6247 Amanogawa, was discovered in late 1990.
Wataru Amanogawa is a Juban High School science teacher and astronomer who appears only in the Sailor Moon Stars anime, later transformed into the villain Sailor Teacher.
Amanogawa is turned into the antagonist known as Sailor Teacher after his Star Seed is torn from him.
His name reflects his connection to astronomy. The given name Wataru evokes navigation, while the surname Amanogawa combines characters for heaven, field, and river, echoing the Japanese term for the Milky Way.
In his younger form, Wataru Amanogawa's features have been noted to resemble Mamoru Chiba.
Wataru Amanogawa works as a science teacher at Juban High School and also holds a position as an astronomer.
Looking for more on Wataru Amanogawa? The Sailor Moon Wiki on Fandom has a dedicated page with community notes.
View on FandomThis content is original writing by Daddy Jim Headquarters based on the Sailor Moon anime series, manga, and official materials. Sailor Moon was created by Naoko Takeuchi, published by Kodansha, and animated by Toei Animation. All rights to Sailor Moon and its characters belong to their respective owners. Episode and chapter references are cited where applicable.
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