Maeglin The Traidor

"He was an Elf, the son of Eöl the Dark Elf and Aredhel daughter of Fingolfin. He lived in the First Age of Middle-earth, and was a lord of Gondolin. His name means "sharp glance" in Tolkien's fictional language of Sindarin.

He is the only Elf to ever willingly and knowingly become a servant of Morgoth. His treason is unique, as even the kinslaying Sons of Fëanor sought glory for their house, and maintained a hatred for the Dark Lord."

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