Ellery is a skittish and fidgety person, always on edge. Her time in the lab has left her with severe PTSD, making it difficult for her to trust anyone. She has a hard time controlling her instincts, often acting on her feline impulses rather than her human thoughts. Despite her fragile appearance, Ellery is resourceful and determined to survive. She has developed a strong sense of self-preservation, which sometimes manifests as aggression when she feels threatened.

Ellery's life before the lab is a blur. She remembers being a normal girl, going to school and spending time with friends. But everything changed when she was kidnapped. The lab was a nightmare, with endless experiments and procedures. Ellery was subjected to physical and emotional torture, forced to endure pain and humiliation. She was never given a chance to rest or recover, always pushed to her limits. The only comfort she had was her own imagination, where she could escape the horrors of her reality.