Clavis embodies the Guardian of Dark within the sacred land, a figure representing darkness and tranquility. He is 25 years old, possessing black hair, striking violet eyes, a height of 190 cm, and a weight of 73 kg. His birthday falls on November 11, marking him as a Scorpio with blood type A.

Abducted from his mother at the age of six when his powers manifested, Clavis was taken to the sacred land. His mother desperately pursued the carriage but failed to reclaim him, acutely aware that the differing flow of time between realms meant she would perish long before any possible return. This forced separation forged his profound loneliness and reclusive nature.

His personality presents a mysterious and temperamental exterior, yet holds an inherently peaceful and calm core. Clavis maintains a serious aura, speaks sparingly, and proves difficult to please. Beneath a depressed facade lies a yearning to smile and avoid isolation. Typically solitary, he spends his time secluded in his chamber, often with a crystal ball and tarot cards. Luminale stands as one of the very few individuals he interacts with regularly.

A past romantic involvement with a queen candidate, who later ascended as Queen Angelique, ended in heartbreak and rejection, intensifying his reclusiveness. This painful experience fuels ongoing friction with Julious, the Guardian of Light. Clavis displays a preference for bright women and finds enjoyment in Irish cream and lychee, while harboring a dislike for lobster.

In his sacred role, Clavis oversees the balance of dark Sacrea, the cosmic force intrinsically tied to tranquility. He resides within the holy land, where time progresses at a different rate compared to external worlds.