Glenvere became the Knight of the Dream, after protecting the Pale Tree against the attacks of an evil sorcerer Avekaj and the summoned Human God, Abaddon. He absorbed the darkness and was destroyed, being reborn shortly after. The sword he carries is a thorn from the Dream itself, it shows the balance between Dreams and Nightmares.
He was Knighted by the Pale Mother and formed the Tangled Roots Alliance to further protect Tyria against evil.
okay but the reason i say lucifer was such a brilliant antagonist is that he was such a self-pitying bastard that he lead half the fandom into babying him despite the fact that he tortured one of the story’s main heroes to the point of having hallucinations so awful they landed him in a mental institution
the best sorts of villains don’t only manipulate the hero; they manipulate the audience too