|| Ⲕⲁⲧя :: —

Katya is a heartless person. She wears silver armor and a blue shirt with yellow trim underneath. When not fighting or in danger, she wears her knight's helmet without it. She also wears chainmail, which forms a semicircle on her chest. She has shoulder-length blond hair with red bangs, parted into a right and left strand. She wears glasses, but removes them when she puts on her knight's helmet. On her left chest is a green, circular badge with a pale red heart imprint.

Katya feels no emotions and is extremely cold to everything. Charismatic and strict, she follows a plan precisely. She is willful and always goes to her goal. She wants to get her heart back by pulling it out of the Tin Woodman's chest. But later, when a demon took up residence in Katya's heart, she became more aggressive and angry. Now she can only feel the demon's feelings. The demon in her body is named Collier. Collier (when she was not in a physical body, that is, as a demon) knew Mentaho. Mentaho is one of the seven underground kings, who not only ruled the city but also took the demons under his wing and provided them with everything they needed. Collier acted as his jester, they became very close, and Collier made him a promise that when she turned 1980, she would marry him. (She is currently 1960, and Mentaho is about 300 years old.)