meiou setsuna

Birthday: October 29
Zodiac: Scorpio
Blood type: A
Hobby: Shopping
Favorite color: Dark red
Favorite stone: Garnet
Favorite sport: Rhythmic gymnastics
Favorite class: Physics
Least favorite class: Music
Favorite food: Green tea
Least favorite food: Eggplant

Sailor Pluto first appears as a Senshi in the second major story arc, and her civilian form is not shown until the third. She stands out among all the characters as she is stationed at the Door of Space-Time, tasked with preventing unauthorized passage through it. Her powers are related to both time and the underworld.

She is introduced late in the Sailor Moon R series as the guardian of the gates of time. Sailor Pluto initially contacts Chibiusa through Luna-P and refers to her as "Small Lady." Chibiusa affectionately calls Sailor Pluto "Puu" and considers her a guardian.

After the events of the second story arc, she leaves the gates of time to live temporarily as a human being, joins the Outer Senshi, and becomes a university student studying physics. The circumstances of her departure differ between versions; in the manga, she is reincarnated by Neo-Queen Serenity after sacrificing herself, while in the anime, Neo-Queen Serenity allows her to leave. Even in her civilian form, Setsuna is the oldest of the Sailor Team, around her late teens or older.

Her personality has been described as distant and somewhat lonely, although she consistently shows warmth and affection towards Chibiusa. After reincarnation, she becomes friendlier but remains emotionally reserved. However, there are moments in the manga where she expresses more emotion than in the anime. She later cares for Hotaru along with Michiru and Haruka.

Unlike other Senshi, it is questioned whether she is fully human—she has been described as "a goddess, eternally guarding the Portal of Space and Time."

Sailor Pluto's abilities and knowledge of past and present are vaguely defined, often interpreted as a form of omniscience. For instance, she seems aware of the two sailor soldiers carrying the mystical objects they were hunting for but did not inform them, allowing various people to be attacked. This portrayal differs from the manga and may be a continuity error. This omniscience is represented as the ability to watch through the gates of time.

Sailor Pluto appears in only a few TV episodes. Unlike Sailor Neptune and Sailor Uranus, she is sympathetic toward the Guardian Senshi and assists them on several occasions. During the second story arc, she allows them to travel through time even though this is not usually permitted. In the third story arc, she often extends help or advice to Sailor Moon and her companions, even when Sailors Uranus and Neptune prefer separation. Later, Setsuna joins the Guardian Senshi in investigating ChibiChibi's true identity. In the manga, she inspires Ami, and her relationship with Ami gives Sailor Mercury additional strength to power up to her Super form.

In the manga, Sailor Pluto has additional influences and domains that are suggested but not explicitly stated in the anime. Initially, she is identified as the "Guardian of the Underworld," with very dark skin and a black sailor uniform. She is also said to be the daughter of Chronos, the god of time. As a ruthless soldier, she follows strict laws, executing intruders who violate the underworld in search of the Gates of Time. She nearly kills Sailor Moon before realizing her identity, stating that "all who break the taboo must be eliminated." Luna mentions that no one should know Sailor Pluto exists due to her dominion and nature, and to her knowledge, no one has ever seen her. Luna describes her as a "lone warrior," noting the sadness in her eyes.