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In the older musicals, Setsuna's hair was a rather blackish-purple instead of green like in the anime and manga, though it was green again the newer musicals.
In the musicals, Setsuna is much less serious and more playful, even referring to herself as the Madonna of the school infirmary. She would make jokes with the Three Lights and Usagi, who in turn teased her relentlessly about her age; when Setsuna asked to join Usagi's amateur detective group, she was labelled as an old woman in disguise. Despite her teasing of the younger girls, she always encouraged them to do their homework and be strong Sailor Senshi. In Tanjou! Ankoku no Princess Black Lady and its revision, she was revealed to live a very lonely life guarding the Space-Time Door, and valued Chibiusa's friendship. She also sympathized with Queen Beryl's love for Prince Endymion, comparing it to her own love for King Endymion, and helped the Queen to escape from Sailor Galaxia's wrath. At one point Usagi compared Setsuna to her mother.
- Setsuna was the only one of the Solar System Sailor Senshi whose hair color was not the same as it was in the anime or manga.
- In the song "Forbidden Hades," she mentioned that she had the blood of Chronos, the god of time.