Lucas Ragnvaldr

Lucas Dieter Ragnahel (ルーカス・ディーター・ラグネーヘル Rūkasu Dītā Ragunēheru) is the younger brother of Adaberto Neelius Ragnahel. He is a A-Rank Mage of Sacrament Fatus.

Etymology
Lucas meaning "bringer of light" in Latin.

Dieter is a name of Old German origin meaning "army of the people".

Ragnahel - Ragna is a variation form of the Old Norse name meaning "advice, counsel" or "gods". Hel is a short form of the Old Norse name Helheim meaning "the realm of the dead".