Hotaru is the only child of Professor Tomoe. She is a very shy and isolated person, who does not make friends easily. In her normal form, she has the ability to cure wounds. This power has been her nemesis in the social scene, her classmates claiming that this odd ability of hers is unnatural and gross. This has led to her spending most of her time in her father's mansion.

She also has a weak body. She can exhaust herself much quicker than any normal person, partly as a tradeoff to her ability to heal.

As Sailor Saturn, she is not her normal, well spirited self. As the vessel for the entity known as Mistress Nine, her only goal is to destroy all life on Earth. She also wields the fearsome pole-arm known as the Silence Glaive. She can use the weapon to slice through anything that gets in her way. Sailor Saturn eventually breaks free of Mistress Nine, but has to die is the process of destroying the evil she let into the world.

Hotaru is revived as a baby and starts to grow-up, having a normal life. She then becomes Sailor Saturn again and powers-up all the Senshi.

Silence Glaive Surprise

Sailor Saturn says this attack... there is a pause of total Silence, then a large explosion which destroies the enemy.

Silence Wall

This is Sailor Saturn's Defensive Attack