In all of the seasons of Sailor Moon, the cast has become very expansive. So I'm only doing the nine sailor scouts, and reluctancly, that twirp with the cotton candy hair...
The inner planetary sailor scouts.
She is the one named Sailor Moon
This is Sailor moon in the first season, and the best way to remember her, I think. Serena may be a whiner, a poor student, obsessed that she's eating too much, and always falling for different guys, but she always pulls through for her friends when she's Sailor Moon. Also, she destroys enemies by throwing her tiara at them. In later seasons though she (and the rest of the sailor scouts) keep upgrading just as much as the power rangers do.
Sailor Mercury
Ami (Sailor Mercruy) is a top student and a bit of a brainiac. She likes swimming, reading, and computers. For some reason, she's my personal favorite besides Tuxedo Mask. We should all thank Ami, for without her Serena would probably flunk out of school completly. Her attack power usually has to do with water.
Sailor Mars
Raye (Sailor Mars) and Serena are always bickereing about one thing or another. It usually involves Raye calling Serena meatball head and Serena yelling back "Why are you so mean?!" Raye works with her grandpa (who's a bit of a dirty old man) at a temple and her attack power usually has to do with fire.