Sailor Moon Aspects and Forms

As a character with different incarnations, special powers, transformations and a long lifetime virtually spanned between the Silver Millennium era and the 30th century, Ami gains multiple aspects and aliases as the series progresses.

First appearance
Form	Manga	Anime	Live-action
Ami Mizuno	Act 2	Ep. 8	Act 1
Sailor Mercury	Act 2	Ep. 8	Act 2
Dark Mercury	--	--	Act 21
Super Sailor Mercury	Act 35	Ep. 143	--
Princess Mercury	Act 41	--	--
Third Senshi form	Act 42	--	--

Sailor Mercury
Ami's Senshi identity is Sailor Mercury. She wears a uniform colored in shades of blue, and is given specific titles throughout the various series. These include Soldier of Water and Intelligence, Soldier of Wisdom, Soldier of Justice and Wisdom, and Soldier of Love and Exams. Her personality is no different from when she is a civilian, although certain powers are unavailable to her in that form.
In Japanese, the name for the planet Mercury is Suisei (水星), the first kanji meaning 'water' and the second indicating a celestial object. Although the Roman planet-name is used, Sailor Mercury's abilities are water-based due to this aspect of Japanese mythology. Initially most of her powers are strategic rather than offensive, and she possesses various pieces of computerized equipment to help her study the enemy.
As she grows stronger, Sailor Mercury gains additional powers, and at key points her uniform changes to reflect this. The first change takes place in Act 35 of the manga, when she obtains the Mercury Crystal and her outfit becomes similar to that of Super Sailor Moon. She is not given a new title. A similar event is divided between episodes 143 and 151 of the anime, and she is given the name Super Sailor Mercury. A third, manga-only form appears in Act 42, unnamed but analogous to Eternal Sailor Moon (sans wings).