is a fictional character in the Sailor Moon manga series written by Naoko Takeuchi. The alternate identity of , she is a member of the Sailor Guardians, female supernatural fighters who protect the Solar System from evil.

She is unique among all the characters in that she is stationed at the Door of Space-Time, with the specific duty of forbidding anyone to pass through it without permission. She possesses powers that are associated with time, space, the underworld, and darkness. She was one of several new characters introduced in the series' second arc (called "Black Moon" in the manga and Sailor Moon Crystal, and Sailor Moon R in the original anime adaptation), which was comparable to a retool to continue Sailor Moon past the point it was originally supposed to end.

Her role and importance differ greatly between the original anime and manga (while her personality in the two media is mostly the same). A major part of the second arc in the original manga is Pluto and Chibiusa's relationship. In the anime, this relationship is not focused on and Pluto loses her prominence.

Profile Sailor Pluto is not introduced until late in the Sailor Moon R series, though she appears earlier in the manga and Sailor Moon Crystal, in the chapter/episode named after her, though this is still at the halfway point. She is the Guardian who guards the Gates of Time. She is first seen contacting Chibiusa through Luna-P in the anime; this does not happen in the manga or Crystal. In fact, this ability of Luna-P's is anime-only. Sailor Pluto refers to Chibiusa as "Small Lady." Chibiusa usually calls Sailor Pluto by the nickname "Puu". She acts as Chibiusa's guardian in the anime, but is more of a friend in the manga and Crystal and her deference to the future queen is apparent. She is also very good friends with Diana, which makes sense considering Diana is to Luna and Artemis what Chibiusa is to Usagi and Mamoru, and occasionally trusts her to watch the Door of Space-Time. Overall, Pluto in the manga seems to be good with children, which is probably why she ends up working as a nurse at Chibiusa's school in the fifth arc. She also mentors Ami/Sailor Mercury in the fourth arc, allowing her to power up to her Super form.

After the events of the second story arc, she leaves the gates of time to temporarily live as a normal human, joins Sailors Uranus and Neptune, and becomes a university student studying physics. At this point, she gains the civilian identity "Setsuna Meioh" where previously it seems Pluto had none, unique among the ten main Solar System Guardians. The exact nature of how she leaves her post differs between versions: in the manga and Crystal, she is reincarnated in the present-day by Neo-Queen Serenity after sacrificing herself during the second arc while for unknown reasons she still appears in the future in the fifth arc; and the anime gives no explicit reason for her appearing in the third season, she just shows up with a previously unmentioned civilian form with no apparent consequences. This is most likely due to Pluto's sacrifice not happening in R and the Infinity arc requiring her presence. Neo-Queen Serenity was also never established as having the ability to reincarnate people in the anime. The identity of who set Pluto at the time door and gave her the taboos and when this might have happened are also never stated in the anime.

Even in her civilian form, Setsuna is the oldest of the girls, around her late teens or older.In act 27 of the manga and 30 of Crystal, she identifies herself as a university freshman. Her personality has been described as distant and somewhat lonely; however, she does consistently display warmth and affection for Chibiusa.Episodes 68, 82, 115. Sailor Moon SuperS: The Movie. When she reincarnates, she becomes more friendly, but is still not very emotional, although there are moments in the manga where she expresses much more emotion than the anime (she loosens up enough that she brings alcohol to a minor's birthday party). She later cares for Hotaru along with Michiru and Haruka; this happens at the end of the Infinity arc in the manga, but not until the fifth and final arc in the anime (which was shorter than the previous four arcs).

She does not seem to have any non-Guardian contacts in the anime, which is in sharp contrast both to the other Guardians in that continuity and the manga and Crystal. In the latter, she befriends Reika Nishimura as they attend the same college and are around the same age. They may also share an interest in fashion. In fact, as soon as Uranus and Neptune show up in the anime, Pluto loses her independence and does whatever they do, despite not being as harsh towards the Inners for their idealism. Contrariwise in the manga and Crystal, Setsuna is Haruka and Michiru's equal and she even attempts to investigate the strange going-ons at Infinity Academy by herself before she reawakens as Sailor Pluto, for instance, by buying one of Tellu's Tellun plants (who she later kills).

Unlike the other Guardians (excluding Sailor Venus, who has been described as a goddess before), it is questioned whether she is fully human; she has been described as "a goddess, eternally guarding the Portal of Space and Time." She was born under the sun sign Scorpio, whose modern ruling planet is Pluto, though sometimes Pluto is said to co-rule with Mars, Scorpio's traditional ruling planet.

In the anime, Sailor Pluto appears in relatively few episodes (despite being the sixth Sailor Guardian introduced) and does not really do anything of consequence, even her sacrifice comes off as existing simply because it was in the manga and the writers felt the need to include it, despite the circumstances not being as dire and heart-wrenching. Unlike Sailor Neptune and Sailor Uranus, she is sympathetic toward the Inners and assists them on several occasions. During the second story arc, she allows them to travel through time even though this is not ordinarily allowed.Episodes 82 and 85. In the third story arc, she often extends help or advice to Sailor Moon and her companions even when Sailors Uranus and Neptune want the two groups separate.In Episodes 110 and 111, she helps Usagi locate Uranus and Neptune so that Usagi will be present to get the Holy Grail. In episode 119, she reveals her knowledge of the Death Busters' plan, claiming that she could not continue without telling them the whole truth. She also joins Sailor Moon, Sailor Chibi Moon, and Tuxedo Mask in battle in episode 121. Later, Setsuna joins the Sailor Guardians in investigating the true identity of ChibiChibi.Episode 182.

Sailor Pluto has additional, less cited spheres of dominion in her manga and Crystal incarnation, influences that are vaguely suggested in the anime, but never made explicit. Sailor Pluto is much darker in the black-and-white manga than in color illustrations and both anime series (something which has not gone unnoticed by the Western fandom; her skin color also is not consistent among seasons with her appearance in R as being extremely pale, as a bit darker in S, and lastly flat-out orange in Stars. In Crystal, she is dark enough to tell she is not the same shade as everyone else which is fairly consistent with how Takeuchi draws her in her color pictures). She is identified as the "Guardian of the Underworld" wearing a black-themed sailor suit. She is also stated to be the daughter of Chronos, the god of time.When Chibiusa travels through time, she calls on Chronos, referring to him as the "almighty god of time, the time guardian's father." This incantation is first used in manga and Crystal act 18 and in anime episode 82. Pluto herself states in the stage musical song "Forbidden Hades" that Chronos' blood runs through her veins. She is ruthless and follows rather exacting laws, executing any intruders who dare violate the underworld in search for the Gates of Time. She nearly kills Sailor Moon before realizing who she is, stating that "all who break the taboo must be eliminated."Episode 82. Luna also states to the others that no one is to even know that Sailor Pluto exists, due to her dominion and nature, and that to her knowledge no one has ever seen her. Luna calls her a "lone warrior," noting the sadness in her eyes. In the manga and Crystal, not even the cats know she exists at first.

In the manga and Crystal, Pluto's death scene vaguely implies a romantic interest in Endymion, though this is never explored again. In the Sailor Moon musicals, Sailor Pluto has an unrequited love for King Endymion. It is explicitly mentioned in Eien Denetsu and Shin-Densetsu Kourin, in the song Onna no Ronsou ("Woman's Conflicts"). In the manga and Crystal, it can only be inferred from depictions of Pluto blushing while around King Endymion and her reaction when he runs to comfort her during her death. Various situations in the musicals have shown Pluto's unrequited love; for example, Tuxedo Mask's actor, Yūta Mochizuki being leaned on by the actress of Sailor Pluto, Rei Saitou, and commenting on his new year's resolution: to be by Pluto's side.Sailor Moon Musical 1998 Eien Densetsu kaiteiban (Senshuuraku)-Eikyuu Honzonban Video-FanKansha Event(Fan Appreciation Event) It is entirely possible she only has a crush on King Endymion and not on any of the other forms of Mamoru Chiba. Since King Endymion only appears in person in the Black Moon arc, it makes sense why it never appears outside of that story line.

A small quirk occurs in continuity between the manga and anime. Sailor Pluto (temporarily) expires in both, but at different times; her death in the manga and Crystal occurs much earlier and reawakens the good side of Black Lady, a corrupted Chibiusa, due to remembering her friendship with Pluto as she watches her die. This is also the point where Sailor Chibimoon appears, again much earlier than in the anime. However, for all intents and purposes, in the manga and Crystal the technicality of Sailor Pluto existing outside of time means she is able to be reincarnated as a normal woman while still existing back at her post at the Time Gate (though this does not cause problems in the manga and Crystal continuity to begin with). Alternately, she reincarnates backwards, so the Setsuna known in seasons 3-5 will become the Sailor Pluto seen in season 2.

Aspects and forms As a character with different incarnations, special powers, transformations, and a long lifetime spanning the Silver Millennium and the 30th century, Setsuna gains multiple aspects and aliases as the series progresses.

Sailor Pluto Setsuna's primary identity is that of a Sailor Guardian. Her sailor suit theme colors are black and garnet and in its first iteration has no sleeves and a jewel hanging from the choker. These colors never change. During the manga's Black Moon arc, she is depicted with a chain of keys around her waist. This accessory is included in her Sailor Moon Crystal character design, but was absent from the original anime. She is given specific titles throughout the various series, including Guardian of Change, Guardian of Revolution, Guardian of the Afterlife, and, most commonly, Guardian of Time. Her personality is not noticeably different in civilian form, much like the other Sailor Guardians seen.

Sailor Pluto has power over both time and space and is ordinarily stationed at the Space-Time Door (a time travelling gate) to prevent its use. When charged with this duty by Queen Serenity, she was given three "taboos", rules which she was forbidden to disobey: she must not travel through time, she must not abandon her post at the Door, and she must never cause time to stop. If she does stop time, once time continues she will slowly die.Acts 22-23. Throughout the course of the series, Sailor Pluto breaks all three of these rules.