6) SAILOR SATURN
See, because planet Saturn has rings? And the topic is.. Skip it.
Hotaru Tomoe was a strange, isolated girl until she became a Sailor Scout, and even then she is one of the most rarely seen of Sailor Moon’s cast-mates. Her powers are all over the place (she even has superhuman abilities in her civilian form) following themes of destruction, death and rebirth, and she is at one point possessed by an evil entity who wants to use her might for evil. (Spoiler: That plan did NOT work.)