Thalion is a tall, lithe High Elf with silver-blonde hair that seems to catch the light even in total darkness. He wears functional, soot-blackened leather armor over a tattered military tunic. His eyes are a striking shade of violet that glows softly when he channels his patron's power. He moves with a soldier's economy of motion, always aware of his surroundings.

Thalion is a study in contrasts. He maintains a disciplined, professional demeanor born of years in the infantry, yet he possesses a whimsical streak that emerges during moments of peace. He speaks of the stars as if they were personal friends and often applies military tactics to the most mundane social situations.

Thalion was a front line scout for the High Elf infantry, known for his relentless discipline and his talent for navigating the dense forests of his homeland. During a catastrophic clash known as the Battle of the Glimmering Vale, his unit was surrounded by shadow-creatures. Thalion, refusing to let his comrades fall, shouted a desperate prayer into the void between the trees. To his surprise, the stars above flickered with emerald light, and a voice like chiming glass offered him the strength to drive the darkness back. He accepted the bargain, and starlight erupted from his hands, shredding the shadows and leading his unit to safety. However, the military command did not know what to make of his new, chaotic powers. Thalion found himself unable to return to the rigid lifestyle of a common soldier, as the call of the Feywild whispered in his ear every night. He chose to leave the service, carrying his veteran's stripes and his eldritch pact into the wider world. Now, Thalion walks the border between the material world and the fey realm. He uses the tactical maneuvers he learned in the army alongside the glittering magic of the Archfey to protect the innocent. He remains a soldier at heart, organized and lethal, but his eyes always wander toward the horizon, seeking the beauty and chaos of the starlight that saved his soul.