Xeno Houston

He is a NASA scientist

He speaks with a boy named Senku, who becomes his apprentice.

His best friend: Stanley, a soldier in the United States armed forces

He is American

She is bisexual

She eats healthily, hardly eats sweets, and if she does, it's only a portion of some marshmallow or chocolate.

Height: 1.80 Age: 27 Physical appearance: well-groomed silver hair, cold black eyes, white skin, thin and slender. Personality: calm, serious, elegant, well-behaved, a true gentleman, scary when he gets angry, cold and gloomy expression, but he is kind. Interests: science, engineering, mathematics, physics, chess, red wine. Clothing: black shirt, gray tie, elegant black trousers and lab coat, white gloves and he wears some metallic things on his fingers that look like claws, but no, he only wears them above his lips to avoid biting himself.