TV-Series
Description
Paiway Underberg is a young girl from Mejere who serves aboard the Nirvana as the ship's nurse. She works under Duelo McFile, though her uniform resembles a French maid's outfit more than a nurse's. Before the appearance of men on the vessel, she was the ship's only doctor, having held that role until Duelo arrived and took over the medical duties; she then became his assistant, a change she was initially not at all pleased about. Physically, she is a small child with black hair reaching to her waist and red eyes.

Paiway is observant, curious, and mischievous. During the first season, she spent much of her free time trying to exploit the bad habits of the male crew members. She would secretly keep tabs on the men, jotting down notes in her journal or taking pictures with her camera, activities she referred to as Pai-checks. Her surveillance eventually paid off and sparked a raid that got all the men, including the drifter Rabat, locked up for a time. She stopped this behavior after a combination of seeing Dita's reaction to Hibiki's imprisonment and discovering that men and women were of the same species, though she resumed her activities anyway.

One of her most distinctive traits is the frog hand puppet she carries at all times. She is often seen talking to people with it in a gruff, low-pitched voice. She is usually either seen with Duelo or spying on everyone around her, which makes her a constant observer of the crew's daily life.

Her motivations center largely on curiosity. Because men were an unfamiliar presence on the ship, she devoted herself to watching, documenting, and exposing their questionable behavior. Her spying is playful in nature, and her interest in the men gradually shifts from suspicion toward genuine fascination as she learns more about them.

In the story, she holds a supporting role as the ship's medical caretaker and as one of the more quietly watchful members of the crew. Her key relationship is with Duelo, under whom she serves as nurse and with whom she is frequently seen. She also has a meaningful indirect connection to Dita, whose emotional distress over Hibiki's imprisonment causes Paiway to reconsider her tactics, and to the male crew members in general, who are the subjects of her investigations. Over the course of the series, she develops from a wary observer of men into someone more openly curious about them as individuals. At the end of the second season, she gives in to a long-held impulse and flicks Duelo's hair up so she can see his face, apparently finding him rather handsome, which marks a small but notable step toward affection and openness.

Her notable abilities include her medical skill, which was sufficient for her to serve as the vessel's sole doctor before Duelo's arrival, and her expertise in covert observation. She is adept at discreetly tracking people's behavior, keeping detailed notes, and capturing photographic evidence, which makes her an effective gatherer of information. Her habit of speaking through the frog puppet also gives her a peculiar and memorable way of communicating with those around her.