Sailor Chi

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Character Information
Name: Sailor Chi
Name (kanji/kana): セーラーX
Alignment: Shadow Galactica
Species: Humanoid
Gender: Female
Lives: Unknown
Occupation: Star Gardener
Family: Sailor Phi (twin sister)
Associates: Sailor Galaxia, Sailor Theta (musicals only)
Aliases: Shadow Mantis (musicals only)
First Anime Appearance: Sailor Moon Cosmos
First Manga Appearance: Act 56 Stars 7
First PGSM Appearance: N/A
English Name: Sailor Chi
Actors: Yuka Komatsu

Sailor Chi ("Chi" (X) pronounced as "kai") was one of the Sailor Senshi subservient to Sailor Galaxia. She appeared only briefly in the manga and Sailor Moon Crystal, but nevertheless had an important impact upon the story. She also made appearances in some of the musicals, though there she played only a minor role.


In terms of hierarchy, it was made clear in the manga that both Sailor Chi and Sailor Phi were the two most loyal of Sailor Galaxia's followers, and were hence second only to her in Shadow Galactica. They were in charge of overseeing the cultivation of the Star Seed-trapping Garden Crystals that surround Galaxia's cathedral, as well as overlooking the operations of the Sailor Animamates on Earth. While Chi was not seen as often as Phi is, there was no doubt that she was still in a position of high power, as she was shown directly reporting to Galaxia on one occasion.

Phi and Chi were also arguably the strongest of Galaxia's followers; this was shown in full force during Act 56 and Act 57, where they killed six Sailor Senshi between them. Sailor Lethe and Sailor Mnemosyne were the first to fall to them, as a result of their treachery, then the Sailor Starlights were also killed in front of Sailor Moon and Princess Kakyuu.

During the final battle between Phi and Chi and the remaining Sailor Senshi, Sailor Chi avenged Phi's death and the destruction of the Garden Crystals by stabbing Sailor Kakyuu through the back with her staff. After Kakyuu died in Sailor Moon's arms, Sailor Moon killed Sailor Chi.


Sailor Chi's appearance in Sailor Moon Cosmos was very similar to her manga appearance, the main difference being the manner in which she and her twin sister killed Sailor Lethe, Sailor Mnemosyne, and the Sailor Starlights. In the movie, it was Sailor Chi who killed Lethe and Mnemosyne, instead of Phi. When Sailor Phi attacked Sailor Moon, Princess Kakyuu, and Sailor Chibi Chibi Moon in the movie, the Starlights protected them by firing their respective signature attacks at Phi, while in the manga, it was Chibi Chibi Moon who protected them, as the Starlights were still unconscious from having been exposed to Lethe's Desert River of Oblivion. The Starlights were able to block Phi's attack for a while, but when Chi joined her, they were overwhelmed by the combined assault from the two sisters, screaming in pain as they were fully surrounded by their energy blast. The Starlights then pulled themselves together and assured their Princess that they would sacrifice their lives for her. They were then destroyed, and the two sisters took their Sailor Crystals and disappeared.


Sailor Chi appeared in several Sera Myu productions: Sailor Moon Sailor Stars, played by Kaori Ishikawa; Sailor Moon Sailor Stars (Kaiteiban), played by Sachiko Akimoto; and Eien Densetsu, its revision, and Shin Densetsu Kourin, played by Mari Yasuda.

In all their musical appearances, Sailor Chi, Sailor Phi, and Sailor Theta were Galaxia's foot troops: indistinguishable, rarely given dialogue, and subservient to the higher-ranking members of Shadow Galactica. There was no indication that they had a special role as Star Gardeners. Sailor Chi's outfit had red highlights, and she had green hair.

In Sailor Stars, Sailor Chi used the alias of Shadow Mantis while working under MC Fly. However, in Sailor Stars (Kaiteiban), she was simply called Sailor Chi. Also in the Kaiteiban, Sailor Chi (along with Phi and Theta) disguised herself as a backup dancer for the Three Lights while on Earth.

In Eien Densetsu, Sailor Chi disguised herself as a Juuban Municipal High School student. She had a shared attack with Sailor Phi and Sailor Theta, "Galactica Cry." After being beaten by Queen Beryl in combat, Sailor Chi was destroyed by Galaxia for her failure.


  • Sailor Chi is often incorrectly identified as "Sailor X," due to the "Χ" in her Japanese name. The letter "X" stands for the Greek letter "chi," hence the name "Chi" and not "X."
  • According to the translator's notes in the English Eternal Edition of the manga, her name likely comes from Bayer designation system of identifying stars, in which stars are assigned Greek letters based on brightness and other factors. Chi is the 22nd letter of the Greek alphabet.

Sailor Senshi
Solar System Senshi
Sailor Moon/Princess Sailor Moon | Sailor Mercury/Dark Mercury | Sailor Mars | Sailor Jupiter | Sailor Venus/Sailor V | Sailor Chibi Moon
Sailor Uranus | Sailor Neptune | Sailor Pluto | Sailor Saturn | Sailor Juno | Sailor Ceres | Sailor Vesta | Sailor Pallas
Sailor Chibi Chibi Moon | Sailor Cosmos | Sailor Luna | Sailor Astarte
Kinmoku Senshi
Sailor Star Fighter | Sailor Star Healer | Sailor Star Maker | Sailor Kakyuu
Shadow Galactica Senshi
Sailor Galaxia | Sailor Iron Mouse | Sailor Aluminum Seiren | Sailor Lead Crow | Sailor Tin Nyanko | Sailor Heavy Metal Papillon
Sailor Pewter Fox | Sailor Titanium Kerokko | Sailor Chi | Sailor Phi | Sailor Theta | Sailor Lethe | Sailor Mnemosyne | Sailor Buttress
Senshi killed by the Shadow Galactica | Sailor Chaos