Nagi

Nagi is a bounty hunter with a fierce reputation who has lost but one target in her distinguished career — the space pirate Ryouko — and wishes to wipe that blemish off an otherwise perfect record.

Traveling with her cabbit Ken-Ohki, Nagi makes a living hunting down wanted criminals in the galaxy. So far, she has only one quarry to have eluded her - Ryouko. She had tracked the space pirate to Earth, where she had taken Tenchi Masaki hostage, thinking he and Ryouko were lovers.

Originally, the two were to fight in space, but a complication occurred, Ken-Ohki and Ryou-Ohki had fallen in love and would not fire upon each other. So a "wild west" setting was created by Washuu on the planet Venus so that the two would fight it out. It ended with Ryouko about to kill Nagi, but the cabbits intervened; Ken-Ohki threatening to fight and Ryou-Ohki begging her to spare Nagi. So Ryouko released the bounty hunter.

Unlike Ryouko, Nagi does not have any superhuman abilities. She instead relies on advanced technology, such as an energy sword and whip, and her excellent fighting skills to compensate for Ryouko's sheer power.