Hotaru is the Princess of Saturn, and transforms into the Melancholic Fighter, Sailor Saturn. Hotaru is an isolated, lonely girl who has no friends, and is enrolled at Mugen Gauken Academy in the sixth grade. She possesses a unique power of healing which has alienated her from her peers due to their fear and misunderstanding. Hotaru also possesses the ability to create an enormous amount of energy that can blast anything in her path, but she does this subconsciously. Hotaru's mother died when she was young, and thus she lives in seclusion with her evil father, Professor Tomoe. At first her father has a good heart, but he sold his soul to an entity known as Mistress Nine after a lab explosion killed Hotaru. In return for his soul, the entity allowed Hotaru to live. Hotaru later becomes friends with Chibi-Usa (Rini) and with the Sailor Scouts. Sailor Saturn is the leader of the Outer Senshi. She is arguably the most powerful of all the Sailor Scouts, but she is severely limited by her weak constitution. As Hotaru, she is a caring and gentle soul, but as Sailor Saturn she has the power to completely destroy entities, fortresses, and entire worlds.

Engilsh Name: None

Japanese Name: Hotaru Tomoe

Element of Influence: Death and Healing

Age (Season 3, 1994): 12-13

Birth Date: January 6, 1981

Astrological Sign: Capricorn

Height: 3' 9"

Blood Type: AB

Hobbies: Reading, collecting lamps

Favorite Color: Purple

Favorite Gemstone: Fluorite

Favorite Food: Nihin Soba

Least Favorite Food: Milk

Favorite School Subject: World History

Least Favorite: P.E.

Strengths: Injury treatment

Weaknesses: Physically weak

Goal: To be a doctor