Corvus

"None can know the hatred I have fostered these past three hundred years. None can imagine the pain of my captivity."

- Corvus, in Dragon Quest IX

Corvus, also known as the Fallen Angel Elgios in Japanese, is the main antagonist of Dragon Quest IX.

Dragon Quest IX
Although he is not revealed as the final boss until later in the game, his presence is felt immediately.

Etymology
His name, Corvus, means crow and fits in with the bird genus naming conventions of major Celestrians in Dragon Quest IX. There is also a small constellation named 'Corvus', which would fit in with the 'Starry Skies' motif of Dragon Quest IX.