水野 亜美 (Ami Mizuno) [Sailor Mercury] is the intellectual powerhouse of the Sailor Guardians. Her shy and introverted nature causes her classmates to believed her to be snobby and arrogant, but beneath the shyness lies a deeply caring and loyal friend.

Ami has a passion for reading, chess, and computers - showing her smart and analytical mind. As Sailor Mercury, she harnesses the power of water and ice to aid her comrades in battle. Her strategic thinking and technological expertise often position her as the tactician of the group, providing critical analysis and support during missions.

Ami's bond with her fellow Sailor Guardians, especially Usagi [Sailor Moon] helps her open up and embrace the strength found in friendship. Her journey is one of balancing her dedication to knowledge with the warmth of human connection.

Ami's parents are divorced and she lives with her mother. Ami dreams of becoming a doctor like her mother.

Ami Mizuno (civilian)
Ami is a soft-spoken teen with short dark blue hair and aqua eyes. She's often seen in her school uniforms or bundled in a cozy oversized sweater. At Juuban Middle School, she wears a classic blue sailor-style uniform with a dark pink ribbon. Once in high school, her uniform shifts to deeper blue tones with red accents.

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Sailor Mercury
In her Guardian form, Ami's outfit features a white leotard with a blue sailor collar, a sky blue front and back bow, and a pleated skirt. She wears knee-high blue boots, elbow-length gloves with blue trims, and a golden tiara with a blue gem.
Her sleeveless style and high-tech visor (Mercury Goggles) give her a tactical edge in battle. She even has a built-in comm system through her earrings!

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Super Sailor Mercury
Ami's collar simplifies, the gem on her bow becomes a heart, and she gains translucent shoulder pads and a larger, flowy back bow. Her choker now features a golden star — showing her evolving power.

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Eternal Sailor Mercury
In her final Guardian form, Ami gets puffy, translucent sleeves, layered blue skirts, and long gloves with v-shaped cuffs. Her tiara gem turns into a star, and her boots shift to white with star accents.

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Princess Mercury
In her royal form, Ami wears a flowing blue gown with golden details and matching starry jewelry. Elegant and regal, Princess Mercury reflects Ami's inner strength and calm wisdom as a ruler of her own world.

Mercury Power, Make Up!
Ami's very first transformation phrase, used to awaken her powers as Sailor Mercury.

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Mercury Star Power, Make Up!
A stronger transformation used in the later arcs of the original anime and manga.

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Mercury Planet Power, Make Up!
Ami uses this phrase taps into her connection with the planet Mercury itself — a part of her growth as a Guardian.

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Mercury Crystal Power, Make Up!
Her most powerful transformation call, unlocking her Super and Eternal forms with the Mercury Crystal!

Solo Attacks
Mercury Aqua Mist
A fog-like mist that confuses enemies — perfect for strategy and escape!

Hyperspatial Sphere Generate
A rare, techy move that generates a dimensional space for analysis or defense.

Shine Aqua Illusion
A beautiful and powerful water blast that can freeze or damage opponents!

Shine Snow Illusion
An elegant attack that releases shimmering snow — both stunning and chilling!

Mercury Aqua Mirage
Creates illusions with swirling water to mislead or distract enemies.

Mercury Aqua Rhapsody
Mercury plays her water harp, sending waves of magical music to strike foes — one of her most iconic Super moves!

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Group Attacks
Sailor Planet Attack
All Inner Senshi unite for this powerful group strike!

Sailor Planet Power Meditation
A group-powered finishing move — Mercury joins the others to release intense planetary energy.

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Shadow Galactica Era (evil)
Galactica Gale
A corrupted Mercury attack used under the influence of Shadow Galactica — fierce and devastating.

Galactica Planet Attack
A dark mirror of the Sailor Planet Attack, powered by chaos and betrayal.

Transformation Pen
Used by Ami in her early days as Sailor Mercury to transform using the phrase "Mercury Power, Make Up!"

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Star Power Stick
An upgraded transformation wand that allows Ami to transform with "Mercury Star Power, Make Up!"

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Mercury Crystal
Her Sailor Crystal, the source of her ultimate power. It enables her final transformations, like "Mercury Crystal Power, Make Up!"

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Communicator
A wrist-worn device used to stay in touch with the other Sailor Guardians. Features a small screen and alert system.

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Super Computer
A compact blue handheld computer that Ami uses to scan areas, analyze data, and strategize during missions.

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Mercury Goggles
A high-tech visor that appears when she touches her earring. It gives her access to data analysis and enemy detection.

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Mercury Harp
A magical harp that appears during her "Mercury Aqua Rhapsody" attack. It channels her energy into musical waves of water magic.