Clive Vivali holds a pivotal role as the sole foreign member of the Subaru guild, hailing from London, England. He studies at S.L Union College, an institution administratively tied to the Re’Union corporation, with his affluent family rumored to harbor potential—though unspecified—connections to the same entity. His appearance is marked by striking red eyes, pale skin, and short blond hair often tucked beneath a black beanie. He sports a red coat lined with black fur on the hood and cuffs, layered over a gray shirt, baggy pants, and a belt studded with knives. Black boots and a dog tag complete his ensemble.

Clive’s combat prowess revolves around the "Transformation" Sense, granting him the ability to summon daggers or swords and reshape them into versatile armaments, including explosives. His tactical intellect further aids in manipulating systems through calculated scams. Though his documented interactions focus on guild operations, supplementary materials mention a girlfriend and his penchant for candy. Existing records do not address his character progression in expanded media or delve into personal relationships beyond pragmatic guild dynamics.