These are the bios and histories of all the main characters in the story. This will probably keep you from getting to confused.
----------------------------------------------------------------------------------------------
Nakago: She's the sailor scout known as Sailor Icestar. She was born on a planet who's name she can't remember, considering she's over 3 billion years old that's no surprise. Her planet was destroyed a few years after her birth, but instead of dying with her planet she became the guardian of a frozen star. A black hole had orbited the star for eons, draining energy from the star until it became a perfect crystal. Then some mysterious being came along and took the black hole and left the crystal where Icestar found it.
After she had been guardian of Icestar for a millennium or two she ran into Sailor Pluto. The two fell madly in love and worked together for a billion years. But Sailor Pluto was called back into the service of Queen Selenity, and the two had to part ways. Pluto tried to get Icestar to go with her but Icestar isn't comfortable with following rules so she stays at her end of the galaxy, where you rule by fear and lies.
Somewhere around here Nakago was committed to an insane asylum. When she came out she said, and I quote, "That was more fun than going to Disney Land!" 10 of the 23 physciatrist that worked with her had to be sent to mental rehabilitation. After that escapade Nakago ended up being a bounty hunter and a smuggler for many years before she met Sailor Gatapollo and they joined together to save their corner of the galaxy.
Gabbi: She's the sailor scout known as Sailor Gatapollo. She wasn't well known until she met up with Nakago, and then she became well known for her lack of mercy towards criminals. Gabbi is only 1000 years old but she commands as much as respect as Nakago.
After she saved Nakago from a giant bunny (don't ask -.-) Nakago decided to repay her by becoming her permanent house guest. Gabbi is much calmer than Nakago, though Nakago can get her to loosen up once a while. Gabbi is also the leader of the group. While Icestar may have more power she doesn't use it that well. Nakago is more interested in the process, where Gabbi is more interested in the results.
Bob: He's the sailor scout known as Sailor Porcupine or Tuxedo Porcupine. Bob has the unusual ability to switch sexes when he transforms. Nakago's theory is that he was originally a women but an evil sorceress, jealous of her good look, turned Bob into a guy so she wouldn't have any competition. Of course that theory is wrong, or is it (Mwahahahahaha). Anyways, Bob was born on the same planet as Icestar but he won't tell her what the name is because he's mean and vindictive. He's sailor porcupine because of his hair, it's spiked and sorta looks like quills.
Julian: He was once the unfortunate smuggling buddy of Nakago's. Julian is from a race of immortals who, thanks to Nakago, lost their immortality. Julian worked with Nakago for a decade before she corrupted him enough that he was sent to an insane asylum for 5 years.
Roxy: She's a living ship that fell in love with Julian. The two would get married except for it's against the law marry a machine (so unfair).
----------------------------------------------------------------------------------------------
That's about it, I'll write more as it becomes important.