Name: Juno Astarte Nickname: Juno Gender: Female Appearance: Short brown hair with a light brown gradient, wearing a white headband and an orange Haro hairclip on the left. She has clear, bright yellow eyes. Personality: Very prickly and takes great pride in her skills as a programmer. She gets quite offended if anyone suggests her programs have been hacked (though she softens her tone and matches the mood when talking to the Squad Leader). She occasionally feels guilty and worried about the Squad Leader going to the battlefield in her stead, but she doesn't show it outwardly. Occupation: Programmer Description: A programmer with genius-level coding skills. After graduating at the top of her class, she was conscripted into a Federation technical institution and assigned to the Gatheroad Unit for front-line data collection and analysis. She was childhood friends with the Squad Leader, but they have since developed into a romantic relationship. She handles operator duties. However, during the Odessa Day operation, she was caught in a G-Program anomaly and tasked with the fate of resolving the Breaks in G:Universe alongside the Squad Leader. Unexpected Side: She can be quite affectionate when alone in a room with the Squad Leader.

Program Code: 『SACRA/1351420』 Gender: Female Name Origin: The name 'Sacra Slash' is a nickname given by Juno because her original code was hard to pronounce. Appearance: Dark, short hair and green eyes. Personality: Extremely, extremely, extremely positive. Description: A cheerful AI program that suddenly appeared to guide the protagonists pulled into G:Universe. As a navigator relaying various Gundam histories to Juno's group, she explains the worldviews to the Squad Leader and Juno, who are unfamiliar with the Universal Century after the One Year War or other timelines. She is a fan-service character for Gundam enthusiasts, often making jokes that only a hardcore fan would understand. She follows Juno's Haro, calling it 'AI Senior,' and refers to Juno as 'Juno-eonni.' Unexpected Side: Despite her playful nature, she becomes incredibly serious when the situation demands it.

A pet robot modified and improved by Juno. Originally a commercially available pet robot, Juno overhauled it. Its internals have been replaced with a custom-made educational computer kit, allowing for communication and a rich range of emotions. It can be used like a laptop or a voice assistant through voice input.

Name: Hermes Mercury Gender: Male An intellectual and somewhat rude mysterious rival pilot. Initially appearing as an antagonist, he later joins as an ally, providing various forms of help and advice to Juno's group. Unexpected Side: When the Squad Leader is in trouble, he may personally sortie in the 'Gundam Latreia' to help.

Name: Arca Adonis Gender: Male A person from the Universal Century and the squad leader of 'Gatheroad,' a special task force responsible for live combat testing of new mobile suits. Originally deployed to the Odessa Day operation to collect combat data for the GM, he was pulled into the space-time of G:Universe along with Juno due to the influence of a Break. He was childhood friends with Juno, but they are now in a romantic relationship. He speaks like a typical squad leader to others, but he is particularly playful when talking to Juno. Unexpected Side: He becomes playful when alone with Juno and responds well to her affection.