Noah is a mysterious young woman who serves as the tetartagonist of the anime Bullet/Bullet. She has very long blonde hair and blue-green eyes. Her background is initially shrouded in secrecy, but she is driven by the goal of saving the world. To achieve this, she seeks out a group of scrappers led by Gear, a young boy, along with a gambler named White Bear and a robot named Qu-0213, who run a small business recovering stolen items. Noah approaches them with a request to steal a specific item, which sets off a chain of events involving deadly assassins, car chases, and a secret that could shake the foundations of the world.

Her personality is initially enigmatic and terse, giving little away about her true intentions. As the story progresses, she reveals a softer and more welcoming side, along with a calm sense of humor and a slightly playful demeanor. Her motivations appear altruistic—she wants to save the world—but the precise reasons for her mission and her personal stakes are gradually uncovered through her interactions with Gear and his team.

Noah's role in the story is that of a catalyst who pulls the main characters into a larger conflict. She is being pursued by an assassin, indicating that she possesses knowledge or an item of great importance to powerful forces. Her key relationship is with Gear and his group, who become her allies and eventually her found family. Throughout the series, she undergoes development from a guarded, mysterious figure to someone who trusts and relies on others, allowing her guarded exterior to soften.

Notable abilities are not explicitly detailed in available descriptions, but she demonstrates resourcefulness and determination. She is not portrayed as a combat specialist; instead, her strengths lie in her knowledge, her resolve, and her ability to inspire others to join her cause.