Isabella is a character from the anime "The Promised Neverland," depicted as a "multi-mask" personality. On one hand, she is motherly, selfless, kind, and gentle with the children; on the other, she is charming, manipulative, cold, ruthless, and deceitful. Isabella serves as a caretaker of a false orphanage, which secretly feeds children to demons. She grew up in this same orphanage alongside her friend Leslie, with whom she created a special lullaby. After Leslie is harvested by demons, Isabella attempts to escape but ultimately gives up. She is given the option to become a mother figure for the children, which she accepts in memory of Leslie, changing her nature into that of an evil and manipulative caretaker. Isabella possesses significant strengths, notably her intelligence, both logical and interpersonal. She excels in strategy and tactics, proving to be unbeatable in games like chess against the trio of Emma, Ray, and Norman. Additionally, she manipulates her children into believing in a hopeful future and successfully eliminates rivals for her position, showcasing her skills in deception. Physically fit and trained in fighting, she demonstrates strength by easily breaking Emma's leg and climbing walls to pursue escapees. However, Isabella also has notable weaknesses. She quickly gave up on escaping after encountering a cliff, suggesting a tendency to surrender in challenging situations. She prefers working alone and distances herself from others, which contributes to her isolation. Moreover, she attempts to convince herself that her life of lies is acceptable, leading to a gradual decline in her sanity and humanity. Ultimately, Isabella is a tragic figure, deeply conflicted between her love for the children and her instinct for survival, expressing a desire to have loved them normally.