A main character in the Sailor Moon meta-series, Sailor Saturn, alias Hotaru Tomoe in her civilian appearances, is a schoolgirl touched by a serious health problem. Besides the seizures specific to the ailment, Sailor Saturn is the last of the solar system soldiers to discover the amplitude of her powers. She makes a great team with Chibiusa and Usagi, two other main characters, who are her best friends. In day-to-day life, Sailor Saturn is not on good terms with her classmates, both because of her seizures and the strange powers she has. Sailor Saturn is present in the manga and the animated series of Sailor Moon. Sailor Saturn and details on her life are usually revealed in the manga form preponderantly rather than in the animations.

Sailor Saturn has the body covered with cybernetic attachments in one version, but later she appears wholy human. Differences in plot and character evolutions alternatate from the manga to the animation; thus, Sailor Saturn fluctuates in terms of age for instance. She is pictured as a 13-year old teenager first, then she somehow gets reborn, grows up and is about five, and finally she becomes a teenager again. As for her hidden powers, Sailor Saturn finds revelation only when Sailor Uranus, Neptune and Pluto unite their talismans and make her resonate.

Even if she is endowed with highly destructive skills, Sailor Saturn uses her powers to save the world and stop the chain of evil in the Millenium kingdom. After the rebirth and the assumption of a new life, Sailor Saturn is a lot more vivid and definitely happier. She wants to be a nurse some day, particularly as she has minor healing powers. In philosophical terms, Sailor Saturn stands for the all necessary doom: without death there can be no rebirth, thus, her weapon, the Silence Glaive can throw a world into complete destruction or annihilation only to be reborn a lot purer afterwards.

With every number in the manga series, Sailor Saturn improves her powers. Her uniform shows the changes in her statute, since after each major trial, a detail is added to suggest the modifications. It surely takes one a lot of patience to follow episode after episode, particularly since one can easily lose track of the events with all the things happening in this world of super heroes that are anything but common. Present in Japanese and English variants of the series, Sailor Saturn makes the picture of this entertainment form complete.