.:Heartless Mephiles 1st:.

This...this is what he had been waiting for. Darkness, pure darkness, engulfing this world. He could use this darkness, become it as it were. These mindless creatures, they were doing the hard work for him. They followed his voice, they listened to him. Perhaps, they were one of the same...they sought out hearts, he sought out destruction, and absolution...

Absorbing the creatures was easy. He devoured them as they devoured his foes, feeding on the hearts that they themselves gorged themselves upon. The hearts, they provided such power, such energy, he craved more and more. He heard their hissing and whispers, the very thing they were searching for...

Kingdom Hearts

It would be his

Heartless Mephiles! Consider him like the final Kingdom Hearts boss so he's gonna have quite a few forms of this. More information of him will come with later forms.

Mephiles (c) SEGA
Heartless (c) Square Enix
Heartless Mephiles design (c) Me