Antagonist: Dis Pater Picture

Here is the antagonist, Dis Pater, God of the Underworld. He possessed the body of a young boy... yada yada yada... Big backstory but I'm not going into it.

Note: most of the name are of Celtic origin or Celtic mythology.

Obvious influence is Earl Phantomhive of Kuroshitsuji with a bit of FFXII costume design.
Eternal Journey
World Tree
Antagonist: Dis Pater
Hel
Bakunawa ~ The Moon Eating Water Dragon