Catalina, also known as Caterina in some sources, is a character in the anime Delico's Nursery. She is a member of Pendulum, the mysterious anti-social organization operating as a primary antagonistic force within the narrative. Her appearance is that of a slender, beautiful young man with long, flowing purple hair and blue eyes. As an adult character, she is depicted as possessing a calm and collected demeanor, often in contrast to the more volatile members of her organization.

Within Pendulum, Catalina occupies a role of experience and relative seniority. She is notably the individual who trained Juras, another key member of the group, when he first joined. This background establishes her as someone with significant knowledge of the organization's inner workings and of Juras personal history, including his unrequited love for a woman named Rosa and his subsequent motivations. Her personality is characterized by a pragmatic and observant nature. While other members might resort to direct confrontation, Catalina demonstrates a capacity for psychological manipulation and strategic patience. This is most evident when she captures the children Ui and Clara. Unlike a brute, she engages them in conversation, patiently extracting the location of their secret nursery by listening to their chatter rather than using force.

Catalinas role in the story is primarily that of an operative and antagonist. She is directly responsible for the kidnapping of Clara and Ui, bringing them into Pendulum’s custody as part of a larger scheme. During this captivity, she shares an unexpected moment of connection with the young Clara, engaging in a surprisingly gentle heart-to-heart conversation that reveals her deep familiarity with Juras tragic past. This interaction suggests a character who, while aligned with the antagonistic faction, possesses layers of understanding and perhaps even a degree of detached sympathy, though her specific backstory remains unexplored. Following the main conflict, she is one of the Pendulum members who manages to evade capture by the authorities, alongside Kiki and Abraham, indicating a continued presence and potential for future action.

Regarding her notable abilities, Catalina does not display overt combat powers. Her primary skill lies in information gathering and emotional intelligence, as she successfully manipulates children into revealing critical secrets through casual conversation. Her influence is also felt through her history as a mentor and trainer, having shaped the abilities of Juras. The full scope of her own capabilities, as well as her personal history and ultimate endgame, remain some of the lingering mysteries surrounding her character.