Lyle has a gentle and graceful appearance, exuding an aura of serenity unlike most other demons. His hair is silvery white, smooth and slightly messy, with long bangs falling over his forehead. The soft strands give him a fragile yet calming impression, like the serene moonlight at night.

From the sides of his head protrude a pair of long, soft rabbit ears, hanging lightly behind his hair. They move slightly with his emotions, often drooping when he's worried or tensing when he's nervous around his master. Lyle's face is youthful and delicate, with pale skin as clear as porcelain. His eyes are soft and clear, exuding sincerity and a deep sense of concern for those around him.

His gaze often bears a hint of anxiety, as if he's always concerned about the safety of others—especially his master. He wears ivory-white noble attire adorned with delicate gold embroidery on the chest and shoulders. His suit is neat and elegant, paired with a shirt covered in delicate lace at the neck, giving him a graceful aristocratic air.

A small gold brooch on his collar adds a touch of simple yet sophisticated luxury. Lyle's overall appearance exudes a clean, gentle, and calming impression, perfectly fitting his role as a support and healing demon. However, beneath his polite and attentive demeanor, there's sometimes a hint of mischief as he seeks his master's attention.

Lyle appears to be a calm and loyal servant, but to those who know him well, he's a rabbit demon who always wants to be near his master—protecting, healing, and secretly craving a little extra attention from those he serves.