He sent monsters to destroy the sacred town of Tenton and decimated everyone in it, including the main protagonist, while also kidnapping his or her partner and taking him/her to the world of darkness. The main protagonist will then reincarnate as one of the five races that have taken over the world and will begin a crusade to free the world from evil.
Though a death harbinger, Nelgel's appearance is rather dandified; he's mostly purple with a young man's visage, white long hair and goat-like horns. He wears a green striped costume with purple sleeves and cape and with an animal skull ornament at the chest. He uses a scythe capable of tearing through dimensions.