Limeskin is a high-ranking First Grade Armored Officer in the Guardian Wings Military. This 83-year-old Reptrace possesses navy blue eyes and scaled skin; his reptilian physiology grants him a younger appearance. Off-duty, he prefers large yellow Hawaiian shirts and brown pants.

As a Reptrace, he has enhanced physical strength capable of confronting strong opponents, though he favors dialogue over combat. His primary duty involves commanding airships in battle, utilizing their weaponry rather than personal arms beyond a standard military sword.

He serves as the commanding officer and caretaker for the Leprechauns at the Fairy Warehouse, overseeing Chtholly, Ithea, and Nephren. He exhibits a kind, patient, and understanding demeanor, often offering veteran advice. Having witnessed countless battles and the deaths of many Leprechauns, he deeply sympathizes with them. He frequently describes soldiers' internal struggles metaphorically as their "Wind."

Privately, he opposes the military's use of Leprechauns as expendable weapons against the Seventeen Beasts, believing they deserve normal lives. Despite his reservations, he adheres to protocol, recognizing wartime necessity. He actively seeks ways to prolong the lives under his command, supporting alternative strategies like Willem's plan to collapse islands.

When military leadership considers disbanding the Fairy Warehouse to repurpose the Leprechauns, Limeskin covertly works within regulations to protect them. He urges Nygglatho to find a pretext to evacuate them to Corna di Luce.

Outside duty, he maintains a family life with a wife and daughter, often speaking proudly of them. He shares a close bond with the mayor of Corna di Luce and is affectionately called "Uncle" by the mayor's daughter, Phyracorlybia Dorio.

During critical events, like the aftermath of a major battle involving Willem and the Leprechauns, Limeskin coordinates rescue operations, mobilizing airship crews to retrieve survivors.