Meiga Kuiarasu

"All life exists to feed his hunger..."

- Raian Getsueikirite about Meiga

Meiga Kuiarasu (螟蛾食い荒らす, Kuiarasu Meiga) is a being of unknown race. He wanders Hueco Mundo and the other realms of existence looking for means to feed his 'hunger'.

Appearance
It is unknown what Meiga looked like before he lost his physical form, or if "Meiga Kuiarasu" is even his real name. In the present, he assumes the form of a phantom-like figure, draped in a long black cloak. The place where his head once was is covered by a menacing Hollow-like mask.

Personality
Meiga cares for only one thing in the present; to fill his unending hunger. He devours everything in his path, leaving entire regions in devastation in his wake. Those that survive an encounter with him are forced to serve him as slaves to his personal will. Failure to do his will results in death for those unlucky enough to do so.

Little else is known about Meiga, as he is a very mysterious being who rarely speaks.

History
Hundreds of years before the present time, the Shinigami who would become Meiga was a member of the Gotei 13. When Sōsuke Aizen began conducting Hollowfication experiments on souls in the Soul Society, Meiga lost his physical form, but with his sheer will and power, he bound his spirit to his robes and attire, allowing him to live on without a body. He also attained the powers of a Hollow through this, as well as an unquenchable hunger. His mere presence devoured the spiritual particles around him, threatening to destroy all of Soul Society itself.

Through unknown means, Meiga was banished to Hueco Mundo, where his presence consumed every Hollow or Arrancar that encountered him, making him stronger in the process, but also making his hunger grow more uncontrollable. At some point, he joined Aizen's Hollow army under the premise that Aizen would teach him to control his power. Aizen, of course, lied, and Meiga fled into the depths of the Menos Forest. He again resurfaced during the Reikai World War where he devastated all of the Tribes of Aether, effectively ending their reign as a sovereign power in the Reikai and establishing himself as a phenomenal threat.

During a confrontation with the then-ruler of Aether, Raian Getsueikirite, he realized that his powers didn't work on Raian, causing him to hunt the Shinigami. After Raian's powers completely vanished, Meiga learned that his powers were nullified because Raian, much like himself, was a "wound" in the spiritual world; meaning that they were both a very unnatural occurrence, as Raian was a Shinigami who'd lost his powers and become Human, only to regain spiritual awareness by learning Fullbring, whereas Meiga was a formless being who'd once been a Shinigami, and now had Hollow powers. For this reason, the two could not mortally wound one another, though they could injure one another.

This led Meiga to hunt for a way to kill Raian, and is currently pursuing his friends, such as Seireitou Kawahiru and Kamui.

Trivia

 * Meiga can find his basis in both Lord Voldemort in Harry Potter, as well as Darth Nihilus from Star Wars: Knights of the Old Republic II: The Sith Lords.