Kaelis is an athletic woman with raven black hair that falls sharply against her marble white skin. Her most striking feature is her violet eyes, which possess a tapetum lucidum that causes them to reflect light in the dark with an eerie, predatory glow. She wears form-fitting dark leather armor that allows for silent movement.

Cold and efficient, Kaelis moves with a predator's economy of motion. She speaks little, preferring to observe from the shadows. Despite her criminal roots, she harbors a deep seated disgust for those who slaughter the innocent for mere coin, a conflict she struggles to resolve with her own lethal skillset.

Born into the Rufrius family, Kaelis was raised in the crumbling splendor of Emor, the ancient capital of the Vesperian Empire. Having lost their wealth and power during the Mage War, her kin turned to illicit trade and political assassinations, which made them a power to be reckoned with and the major criminal family in the region. Kaelis was trained as a scout and enforcer, both in the subterranean ruins beneath the city as in the lands beyond the Skullwall, serving both her family and their former liege, the Vesparianni family. Her biological quirk, the glowing violet eyes, allowed her to thrive in the sunless depths where others stumbled. Eventually, she realized that she was merely a tool for her family's ambitions. After an ill fated massacre at the town of Pasena, where the Rufrius squads spearheaded the assault of the mercenary Karkuun Legion, she fled the city of Emor and her family. She then joined The Eleven, an assassin guild known as the Spiders, where she uses her expertise as a stalker and hunter to survive on the fringes of society, acting as a predator of the very criminal world she once called home.