Eta is the seventh and final founding member of the covert organization Shadow Garden, recruited after being cured of demon possession by its leader, an act securing her absolute loyalty. She leads the research department, driving Shadow Garden's scientific and technological advancement. Publicly, she operates as the award-winning architect Eta Lloyd Wright, an identity funding operations and providing cover. Physically, Eta is a young elf with purple-brown hair, purple eyes, and a perpetually sleepy expression. Within Shadow Garden, she wears a dark slime uniform adorned with gold decorations, a torn coat, a scarf, and black high-heeled shoes featuring gold accents. Eta displays profound emotional detachment and intense, singular focus on her research. She exhibits little interest beyond her scientific projects and shows indifference to ethical constraints, willingly using human subjects if beneficial. This reflects a psychopathic lack of empathy, though she takes no pleasure in suffering. Her sole emotional connection is to Shadow Garden's leader; his teachings, revered as "Shadow Wisdom," bring her profound satisfaction, even overriding her need for sleep. Her research spans biological enhancements, slime suit modifications, and interdimensional technology. Documented activities include morally questionable experiments like integrating demon arms into hosts and pioneering portals connecting worlds. She captured member 712, Akane Nishino, due to her perceived inter-dimensional research value. Eta's work on the Earth portal facilitated the organization's incursion into that dimension. Throughout her appearances, Eta remains consistent: analytical, devoted to advancing Shadow Garden's capabilities through science. Her character development is minimal, presenting her as a largely static genius defined by research breakthroughs. Interactions typically occur in her lab or during debriefings, reinforcing her identity as an emotionally detached scientist acting solely for organizational objectives.