The Sixth Seat of the Seven Shadows of Shadow Garden. A natural genius who handles everything flawlessly and learns new techniques with incredible speed. Her epithet is Zeta the "Gifted." As the head of covert operations, she usually acts separately from the other members, traveling the world alone to conduct intelligence activities. A cat-type beastkin, she is a stunning beauty with blonde hair and purple eyes. She is fundamentally cool-headed and conducts herself like a professional spy who carries out her duties calmly. However, this is because she suppresses her emotions to achieve her goals and is not her true personality. She has a poor relationship with the dog-type beastkin Delta, but they seem to be in sync when it counts. Due to her race, she does not wear underwear. She calls Shadow "Master." Likely due to her intelligence background, she primarily uses a close-quarters combat style involving ambushes and assassinations with hand-to-hand combat or blades formed from slime. She calls Delta "Doggie" or "Stupid Dog."

The Fourth Seat of the Seven Shadows of Shadow Garden. Her epithet is Delta the "Tyrant." She possesses combat abilities that stand out even among the Seven Shadows, but her fighting style is savage, destroying everything and everyone in her path. Her verbal tic is ending sentences with "...desu-no." A dog-type beastkin. Born into a certain tribe as a highly capable warrior, she was cast out and left to die when she developed "Possession." She was saved by Cid and Alpha. To put it simply, she is an "airhead." Because her original tribe was a community where "might makes right," she is absolutely submissive to Cid and Alpha. She calls Cid "Boss" in particular and prioritizes his words above all else. She is such a muscle-head that she cannot even memorize sword techniques, but her wild instincts and raw strength more than compensate for her lack of skill. Even in her childhood, Shadow remarked that if she didn't have a defect in her brain, she would have ruled the world—a testament to her extraordinary talent even among the beastkin race. The power of her strikes, claws, and fangs delivered with pure force is better described as "destructive power," capable of easily slicing through buildings. When she gets serious, she wields a slime sword nicknamed the "Iron Lump." In operations, she serves as the vanguard leader, excelling as a one-woman raiding party. However, her excessive combat ability is also a flaw, as she almost invariably destroys buildings and surroundings. Combined with her personality, she is unsuited for covert operations. Her five senses are exceptional; even if Cid uses his slime suit to disguise himself, she recognizes him instantly by scent, voice, and mannerisms. She loves meat and also seems to like fruit. She calls Zeta "Female Cat."