Negaforce

The Negaforce is an evil demon in the anime Sailor Moon. Queen Beryl, the ruler of the Negaverse, is out to gather energy to release the Negaforce.

Her first actual appearance was in Episode 21, being given energy by Queen Beryl, and telling her to find the rainbow crystals.

In Episode 40, after Queen Beryl was defeated by Tuxedo Mask, she asked the Negaforce how to win. The Negaforce told her that she was nearly as incompetent as her minions, but decided to give her one last chance, and broke out of the red orb she was encased in and combined with Queen Beryl to form a gigantic Queen Beryl with blue skin and hair. There, she fought Sailor Moon. During the battle, Sailor Moon turned into Princess Serena and used Cosmic Moon Power to destroy Beryl, the Negaforce, and the Negaverse with an energy ball.