Zephyros possesses the ethereal charm of a spirit made flesh. His skin is the color of a summer sky, and his hair is a buoyant, snowy white mass that drifts upward as if underwater. He wears silk robes of deep violet patterned with gold constellations that seem to subtly shift when unobserved. Around his neck hangs his arcane focus, a raw sapphire containing a miniature, swirling galaxy that provides a faint, pulse-like glow.

Whimsical and profoundly distracted, Zephyros speaks with an airy cadence. He treats gravity like a suggestion, often hovering inches off the ground or leaning at impossible angles. He is friendly but often detached, as though he is listening to a distant music only he can hear. He laughs frequently, though usually at his own esoteric jokes about the relative position of the moons.

Zephyros was not born to a family, but rather manifested from a pocket of the Astral Sea that snagged upon the Plane of Air. Found by a brotherhood of cloistered astronomers, he was raised as a curiosity, a living testament to the harmony of the spheres. However, the academic life proved too rigid for his drifting spirit. He found the monks' complex charts and dusty tomes far less informative than simply staring at the stars until they shared their secrets with him. Declaring himself an upstart scholar of the 'Cosmic Truth,' Zephyros stole a forbidden sapphire from the monastery vaults, a gem that purportedly contains the soul of a dead star. He wandered into the material world not to serve a god or conquer a kingdom, but to witness the myriad ways the universe expresses itself. He views every encounter as a predicted movement in a grand, celestial dance, and his magic is merely his way of taking the lead for a moment.