Succubus

Known only as the succubus (or belfegoll by her manual page), she is a mysterious figure who has started reigning chaos on the world from another world lightyears away. Before her destructive invasion, she was met by the 8 ura fighter girls for attempting a raid on her homeland, which ended in failure. She begged for mercy for the 8 to spare her. After which, they had made an agreement to spare her, and become servants on the invasion of the other world, which she has had a major feud with for centuries. She had 5 captives in her dungeon, of which have become her servants. Upon invading the world, she had invaded various news rooms across the globe, calling all warriors to step up to her challenge of defeating her. She is fought twice (or three times, considering she uses dark energy to emulate the Wily Capsule), once in the museum, and again at the final stage. She has the most powerful gas attacks out of all the others, and is always ready to attack with her reservoir of it. She doesn't like being defeated, and is terrified of being encased in a bubble.

Intro Stage
She flies about, and sometimes dashes at the player, and imobilizes them with a direct attack.

Dark Capsule
The capsule will appear in different areas around the room, sometimes shooting off Thunder Beams, Metal Blades, Pharaoh Shots, Gyro Attacks, Triple Blades, Trident Lasers or Knight Crushers either at the player, or directly downward. It will also perform a spin attack and rush at the player.

Trivia

 * She shares the same weakness with Lilim.
 * The Dark Charge refills her energy by 2, 4 and 8 respectively to the charge level.
 * She is also weak to the Angel Arrow.
 * The weapons that the Dark Capsule emulates are fan favorite weapons from the previous Mega Man games.