Morrigan Aensland is a succubus video game character from Capcom's fighting game series Darkstalkers (or Vampire Savior in Japan.) She appears in Marvel Vs. Capcom 3 alongside Felicia and Hsien-Ko.
Morrigan is very vain, and lives for little more than the excitement of battle, although her endings in the games as well as various media show that Morrigan slowly takes up more of her responsibility seriously. She appears as a beautiful woman with long, light green hair, a very revealing top, and bat-like wings on her back and the sides of her head. Morrigan can reshape these wings into spikes and blades when attacking her enemies, as well as using them to shield herself from enemy attacks. Her wings can also separate from her, and form into a cloud of bats. She uses a variety of magical attacks as well.
Although Demitri would seem to fill the spot, it is often suggested and implied that Morrigan is the main character of the Darkstalkers series, due to her importance in the overall story as well as her many appearances outside of her game series. She may even be considered the protagonist or something of an anti-hero, since despite her demonic appearance and nature, she is not evil.
Morrigan is a succubus and the adopted daughter of Belial Aensland, one of the rulers of the Makai, or "demon world". When she was born, Morrigan was extremely powerful (an "S Class" according to some Japanese source books), so much so that Belial sealed away part of her power, one-third in himself to be returned upon his death, and one-third in a pocket dimension, which eventually became a being of its own, a succubus named Lilith. Without knowing this, Morrigan grew up. She found her life in the Aensland castle dull, and so she visited the human world many times to look for some kind of entertainment. One night, she was drawn to a strange power (later identified as Pyron) and ventured into the human world once again.
After she returned from the human world, she was told that Belial had died and that she is the next successor to the throne of the Aensland family. Although she is rightfully the ruler of Makai, she keeps avoiding her responsibilities and continues her life as before. But when Jedah created the Majigen, she and her castle were pulled into Jedah's dimension. Sensing Lilith, Morrigan sets off hoping to find some sort of enjoyment. After she meets Lilith, the two become one again.