Sailor Uranus
The character of Sailor Neptune was not developed until partway through the "Sailor Moon" series, after the Sailor Soldiers were well-established. She was created in tandem with Sailor Uranus, as a pair of "complementary but opposite characters", and meant from the beginning to work alongside Sailor Pluto. Creator Naoko Takeuchi has said that she was shocked by the changes made to Michiru's personality in the anime series, but that she was glad fans still liked the character.