Tin Nyanko is a character also from the planet Mau. She teamed up with Galaxia in a life or death situation receiving the bracelets from her that took over her after she had to prove she could become a real sailor guardian by betraying Sailor Mau. Unfortunately she was tricked by Galaxia as she was not an actual senshi guardian. Coming to Earth that was heavily filled with true star seeds, Galaxia claimed; She was one of the few animates that served to steal star seeds causing those who didn't have a true seed to turn into phages. However in the Manga her big announcement was to Artemis and Luna who didn't even know she was from the planet Mau. She was called a fake Sailor as well as a traitor to the planet Mau as well as accused of the murder of Sailor Mau. However, Tin Nyanko was not having it, calling both Luna and Artemis betrayers for leaving the planet to serve the moon kingdom.

-Act 53 Stars 4

Sailor Tin Nyanko- Not Mau