Thalion appears as a tall, constantly shifting humanoid figure whose features borrow from many peoples without fully belonging to any of them. His skin looks like moonlit parchment overlaid with faint constellations that drift under the surface when he moves. Silver hair falls in long, weightless strands that sometimes break into lines of script or musical staves before settling back into place. His robes resemble layered archival cloth stitched with gold thread, but close inspection reveals they are made from turning pages, faded banners, and strips of translucent hymn notation. He carries himself with measured, unhurried grace, as though each step is chosen from a thousand remembered footsteps. The most unexpected detail is that his left hand is callused like a laborer's, rough with old work, while his right hand is ink-stained and elegant, as if two different lives share the same body.