Nella is a servant of Mina Tepes, the vampire queen, and is one of three attendants who serve alongside Nero and Nelly. She has short, maroon or dark purple hair that typically covers one of her eyes, with the visible eye being green or blue. Her usual attire is a standard maid uniform, but when undertaking intelligence missions, she switches to leather pants and a jacket for practicality.

In terms of personality, Nella maintains a stoic and composed demeanor in most situations. Despite this reserved exterior, she is a deeply caring individual who shows kindness in subtle ways. An example of her gentle side is when she gave a small teddy bear to a boy who had cried after receiving an injection from her, demonstrating her desire to comfort others even when her own manner may seem distant.

Her primary motivation is to serve Mina Tepes faithfully, carrying out her duties as a maid and occasionally supporting Mina’s more covert operations. Nella appears to be a loyal and dependable member of Mina’s inner circle, though she does not take a leading role in the main conflicts. Within the story, she occupies a supporting role, often seen performing everyday tasks or assisting during key events alongside the other servants.

Her relationships are defined by her position in Mina’s household. She works closely with the other two servants, Nero and Nelly, forming a cohesive team that attends to Mina’s needs. There is no indication of significant personal development or major character arc during the series; she remains consistent as a quiet, dutiful attendant.

Regarding notable abilities, Nella does not display any supernatural powers or combat skills in the available information. Her capabilities are largely limited to her role as a maid, which may include medical or nursing tasks as implied by the scene where she administers an injection, and perhaps basic reconnaissance during intelligence operations.