•Hair: Black Fur (Black Hair)
•Eyes: Red (Human: Blue)
•Status: Guardian, advisor, pet.
Luna is a talking black cat that appears from the very beginning and advises Sailor Moon and the Sailor Senshi as well as trains them. She lives with Usagi Tsukino and she is shown growing close to Artemis, another feline guardian who belongs to Minako Aino/Sailor Venus.
In the manga, Tin Nyanko says that they are creatures from the planet Mau. Tin Nyanko was Sailor Mau but Sailor Galaxia took her Star Seed and made her into an Animate. None of this is ever mentioned in the anime.
•Summary of Luna's story
Planet Mau; A planet full with life and hope, hope to change the fate of the universe..
Long ago, there were two cats named Luna and Artemis. Since they were little, they had been training to guard something most precious, something that would give peace.
However as years and years went on, the planet was soon to vanish by hand of Sailor Galaxia, whom had been possessed by Chaos.
A young Lady had shown up telling the rest of the people that they would be safe on her planet however she had turned them into cats, being it was much safer to hide them.
They both agreed and had trust in the Lady, however something also seemed odd - the crescent moon on her forehead was the same as the one Luna and Artemis had.
Queen Serenity had taken in both cats and asked them to help her. She had told them that something very terrible was about to happen soon.
The Moon Kingdom was under attack, and Queen Serenity advised both Luna and Artemis to find the Princess who resided on a planet called Earth.
They both agreed and set out to find her, and the rest who could stop this villain.
However, both Luna and Artemis got separated when arriving on Planet earth. It was some years later that Luna had searched high and low for this Princess.
The black cat was thinking this princess would be like Queen Serenity - however.. this princess wasn't as she had hoped to be.
Luna had a goal, and this goal is to help Usagi and guide her to the chosen path and help save the earth, even if she couldn't do much being a cat.
Mercury..Mars..Jupiter...and finally Venus, where Luna reunited with Artemis, it seemed the Inner Senshi had returned and still more to come.
Luna did her best; and watching everyone work together, it was something Queen Serenity had hoped too.
Even with Luna's mission completed, there was still much more for her to learn.
Deep in Luna's heart; Even she wished she could become human.
..To understand just for that one last moment.
And when she did..
She discovered where her heart truly belongs.
Guilds I am in.. Come join us!