Nadil

The Demon Lord, arch-enemy of Lord Lykouleon. He was decapitated, but his armies still scour the land. Long ago, he worked with the Dragon Lord but betrayed him to lead his demonic forces. He was the true Dragon Knight of Wind, but consumed the Wind Dragon to gain power and further his own means. Ruthless and cruel, Nadil desires Cesia's power as well in order to strengthen his weakened, but by no means minute, forces. He harbors secret ties to Rath Illuser and is capable of possessing his body on occasion and wreaking havoc through him. While his exact plans are largely unknown to all by himself, Nadil's motives are clear: control of all three lands of Kainaldia, Dusis, and Arinas. (Source: Wikipedia)