Planet Mercury is exactly that... A planet. It doesn't have a gender. In Roman Mythology, Mercury was male, in Sailor Moon, Sailor Mercury was female.
Sailor Mercury learns the skill Mercury Aqua Rhapsody in episode 151, which is in the Super S season. If you are looking for the skill that she learns in Sailor Moon R, that is Shine Aqua Illusion, which appears in episode 62.
In the series... No. I dont know in the manga.
The Sailor was created in 1979.
Sailor Song was created in 1992.
Amy sailor Mercury Ray sailor Mars Lisa sailor Jupiter Nina sailor Venus Alex sailor Uranus Michelle sailor Neptune Susan sailor Pluto Hotaru sailor Saturn
episode 5
Codename: Sailor V was created in 1991. Sailor Moon (manga) was created in 1991. Sailor Moon (anime) was created in 1992.
Blue
Hello Sailor - Hello Sailor album - was created in 1977.
The inner sailors are: Sailor Moon, Sailor Mercury, Sailor Mars, Sailor Jupiter and Sailor Venus The outer sailors are: Sailor Uranus, Sailor Neptune, Sailor Pluto, Sailor Saturn. Also Tuxedo Mask helps, but he is not a sailor.
The Sailor's Song was created on 1958-11-09.