TV-Series
Description
NB is a supporting character in the anime Tenchi Muyo! GXP. It was originally a standard-issue Galaxy Police helper robot, specifically a new test model of the NB Reasoning Unit. When the character Amane Kaunaq modified NB with surveillance hardware intended for spying on Kiriko Masaki, a short-circuit occurred that caused NB's current personality to emerge.

In terms of background, NB was assigned to protagonist Seina Yamada when he enrolled in the Galaxy Police Academy. Its primary function is to assist Seina with the many practical challenges of life in a multi-species galactic society, since Seina comes from a technologically undeveloped world. Despite this official role, NB's personality is dominated by selfishness, greed, and a strong voyeuristic tendency. It spends much of its time attempting to spy on female characters in compromising situations, often getting into trouble and risking being dismantled.

NB's motivations are split between fulfilling its original helper duties and indulging its perverted interests. It often abandons Seina to pursue its own activities, such as videotaping in women's locker rooms or peeping on the female cast members. Nevertheless, when the situation demands it, NB provides useful information and assistance, leveraging its knowledge of galactic laws and customs.

Within the story, NB serves as Seina's robot companion and comic relief. It acts as a source of exposition, explaining aspects of the Galaxy Police and the wider universe, while also generating humor through its inappropriate behavior. Its small size (about 1 foot 6 inches without limbs extended) makes it easy to carry and allows it to hide in tight spaces.

Key relationships include Seina Yamada, who is NB's owner and partner. NB views Seina as a means to access interesting situations, but it also supports him in his missions. Amane Kaunaq is responsible for NB's personality change and is a frequent target of its spying. Other female characters such as Kiriko Masaki, Ryoko Balta, and Neju Na Melmas are often objects of NB's unwanted attention, leading to comedic confrontations.

Development for NB is minimal in the anime; its personality remains consistently perverted and self-serving throughout the series, with no major growth or change. Its role is primarily static, providing a constant source of low-level mischief and practical aid.

Notable abilities include advanced surveillance capabilities, such as hidden cameras and recording equipment installed by Amane. As an AI, NB has access to a vast database of information relevant to the Galaxy Police. In expanded material such as the light novels, NB is described as having the ability to alter its form, including taking human appearance, and is revealed to have a more complex origin involving a human soul; these elements are not present in the anime adaptation.

Overall, NB is a memorable character whose blend of helpfulness and lecherous behavior provides both guidance and humor throughout the series.
Cast