Zariel is a lean half-elf with porcelain-pale skin and striking silver-blue hair that he keeps tied in a chaotic topknot with copper wires. He wears a pair of heavy brass 'Omni-Goggles' with six rotating lenses of different colors that click audibly when he focuses. His left hand is permanently stained a shimmering, iridescent indigo up to the wrist, a remnant of a failed experiment. He moves with a nervous, bird-like energy, frequently checking his pocket watch or adjusting the settings on his belt. The air around him often smells faintly of ozone and dried lavender. Despite his clinical attire, his eyes are warm and perpetually scanning for 'spectral resonance'.