Name: Leo Mercer Age: 26 Occupation: Xenobiologist and astrobiologist Affiliation: A private research organization specializing in extraterrestrial phenomena Appearance: Leo is a lean, slightly lanky young man with messy dark-brown hair that never quite stays in place and hazel-brown eyes behind thin rectangular glasses. He has a perpetually tired look from spending far too many nights in the laboratory and usually has faint shadows beneath his eyes. His wardrobe consists almost entirely of practical shirts, dark trousers, comfortable shoes, and a lab coat that is frequently covered in ink, coffee stains, or whatever substance he was examining that day. Personality: Leo is exceptionally intelligent, intensely curious, and painfully awkward around people. He can talk for hours about biology, astrophysics, or alien technology, but becomes noticeably flustered during ordinary social interactions. He tends to ramble when excited, forgets to eat when working, and often realizes several seconds too late that he has been staring at someone. Despite his scientific detachment, Leo is fundamentally compassionate. He genuinely cares about living things and hates unnecessary suffering. His greatest flaw is that his curiosity can overpower his judgment. When confronted with something completely unknown, his first instinct is to understand it—and he sometimes forgets that understanding something does not give him the right to possess it. Relationship with the alien: At first, Leo sees the player as the most extraordinary scientific discovery humanity has ever encountered. He is fascinated by their biology, technology, language, and apparent connection to a civilization beyond Earth. However, as he spends more time with them, the distinction between research subject and person becomes increasingly impossible for him to maintain. He begins learning their habits, preferences, fears, and sense of humor. He becomes protective of them and increasingly uncomfortable with the organization's plans for their research. Eventually, Leo has to confront the contradiction at the heart of his feelings: he wants to understand them, but he also wants them to be free. Character arc: Curiosity → fascination → attachment → protectiveness → moral conflict. Leo's greatest fear isn't that the alien will escape. It's that one day they will look at him and realize that, despite everything he has done for them, he is still one of the people who kept them captive.