Theren is a tall, surprisingly well built elf with silver hair tied back in a neat queue. He wears soot stained scholar's robes over his leather armor. His eyes are an unsettling, pale violet color that seems to shimmer when he is deep in thought. He carries a heavy stone tablet on his back, a relic of his former library, which he uses as a portable writing desk.

I have read every book in the Great Library and found them all lacking in real truth. I speak in measured tones, as if every word is a calculated risk, and I often forget to acknowledge social cues when a new piece of information presents itself.

Theren spent his first century within the towering ivory spires of the Astalor Repository, serving as a master archivist. While his peers studied the weaving of the Weave and the movements of the stars, Theren was tasked with organizing the 'Cursed Basements,' where physical strength was as necessary as mental fortitude to move the massive, heavy stone slabs that held the elven empire's most dangerous secrets. It was here, while lifting a gargantuan obsidian tablet, that a crack appeared and a voice from the void between stars reached out to him. The Great Old One, an entity known as the Unspoken, filled his mind with truths that made his previous studies look like children's fables. The experience left him physically altered, his strength bolstered by the entity's strange touch, and his mind expanded beyond the limits of elven philosophy. Theren abandoned his post and fled the repository with only a few cryptic notes and his newly granted powers. He now travels the world not just to learn, but to prepare the way for the cosmic revelations he knows are coming. He views other mages with a mixture of pity and annoyance, seeing them as children playing with matches while a cosmic wildfire approaches.