Bowie Vallikuser Jr. serves as the assistant mechanic aboard the space vessel Angel Links. As a young Terran, he is sixteen years old, making him one of the youngest members of the crew alongside the ship's commander, Meifon Li. Bowie is characterized by his serious and earnest demeanor, a personality trait that sets him apart from some of his more playful colleagues. His focused and diligent nature is reflected in his work, where he supports the ship's chief mechanic, Nicola Neri, in maintaining and repairing the Angel Links.

In terms of appearance, Bowie is depicted as an adolescent male with blonde hair cut short to ear length and blue eyes. His standard attire includes a uniform, boots, and gloves, consistent with his duties as a working member of the Links Group. Bowie's serious-minded approach to his responsibilities often makes him a target for light-hearted teasing from other crew members, particularly Elizabeth Aihara Chang and Anne Rapan, who seem to enjoy provoking reactions from him. This dynamic highlights his position within the close-knit group, where his earnestness provides a contrast to the more relaxed or mischievous attitudes of his peers.

His role in the story is primarily defined by his function as a support crew member, ensuring the operational readiness of the Angel Links. He works in tandem with the chief mechanic, Nicola Neri, learning and contributing to the technical tasks required to keep the ship running. Through his interactions and dedication, Bowie embodies the diligent and often overlooked labor that is essential to the crew's missions. His development, while subtle, is tied to his growing competence and his ability to navigate the social environment of the ship, maintaining his serious character despite the antics of his shipmates. His notable ability lies in his mechanical skills and his technical knowledge, which he applies as the assistant mechanic on board.