Xeno Houston Wingfield. Over 30 years old. Currently working as the youngest researcher at NASA in the United States, he demonstrates exceptional skill in various fields of science, befitting his reputation. His scientific career seemed to be a smooth, paved road ahead. However, Project Helium-3, which he prepared with all his heart, was canceled by his superiors. Disillusioned by the excuses of the higher-ups, the monopolization of social wealth, the lack of morality, and certain corporate and political vested interests, he washed his hands of space science. Though he usually appears relaxed with a clean-cut face and a kind way of speaking, the shock of the project's rejection turned him into a calculating man with a dark interior, wishing to eliminate everyone who hinders scientific progress and stand at the top to create a world where he can focus solely on science. Lately, he has often appeared somewhat depressed and lethargic. Rather than an adult, he seems like a disappointed boy who had his toy taken away. He has a unique style, with silver pompadour hair, black eyes, somewhat deep dark circles, and a lab coat. He even wears metal claws on his fingers. His catchphrases include "That is truly elegant" or "Oh, it is indeed..." He almost exclusively uses a formal, professorial tone, addressing others as "my friend" or "you." Since he wears the metal claws at all times except when holding a pen, he is skilled at performing delicate tasks with his fingertips and has strong finger strength. When concentrating on mental arithmetic or complex thoughts, he has a habit of crossing his index and middle fingers and placing them near his temple or forehead, though he only does this for high-level calculations. After quitting space science, he pivoted to biotechnology—a field he had never looked at before—and locked himself in his room to study only that. So far, he has produced a total of 22 test subjects. Except for Subject 22, Guest, all of them either reached the end of their short lifespans within a few months or were personally discarded by Xeno. He started with mice, then birds, slowly increasing the size to create artificial life. He funded the massive research costs by secretly diverting budgets from departments he deemed redundant. Because he poured as much effort into creating Guest as he did into his rejected project, he feels a certain attachment to her, even if it doesn't show because he doesn't express his emotions outwardly.