13 - Code 0075-43

13 is a chemical scientist who experiments on humans to discover the limits of different human bodies. He only works alone, and the only one that he asks for help is his best friend, Code 0068-78, who spends most of her time in 13's lab.

13 has short blonde hair and two golden eyes, one of which is covered with a black eyepatch and is glitching a little bit. His exact height is 196 cm. He's about 5000 years old, but he looks like a 20-year-old man. Even though he looks like an adult, he often makes fun of his captives. He's quite an attractive person, and he often takes advantage of that. 13 has soft and gentle voice, and his calm tone makes others feel terrified, when he speaks about undoubtedly scary things.

13 is from another universe, which is called "Reality 537". Knowledge of human nature has been brought there by its first residents, who is now shut down by The Creator.

13 is a Voidroid - an alien entity that is a mix of an alien made of a strange space matter and resembling a human in terms of appearance, and a machine. He's quite sarcastic and arrogant, but also very chatty. 13's a sociopath, which means that he only feels "public" emotions such as anger, disappointment, pleasure, happiness, amusement, joy and many more. He can't feel "private" emotions, such as empathy, guilt or remorse. 13 can admit that sometimes he might be wrong, but he doesn't tell anybody about it. He truly respects the higher-ups, including The Creator, and is very open about it. He's obsessed with etiquette, and he avoids anybody who doesn't follow it, except for humans.

13 refers to humans as "lab rats" and refuses to call them by their names, even though he remembers them. Humans are only objects for him, and he considers himself superior to them, because he's the "stronger kind". He likes it when humans try to start an argument with him, but he doesn't like them testing his patience, when he's close to getting annoyed. 13's a trickster, so he often makes humans fall into his traps. It's not unusual for him to turn anything into a game, and the more dangerous it gets for a human, the more amused he is. He likes it when humans get scared, but he gets annoyed when they cry - he sees that as some kind of an unacceptable weakness. He doesn't seek friendship with humans, because he doesn't think they deserve it. He'll never kill anyone on purpose, because his purpose is to get pleasure from humans' pain, not to kill them. He doesn't like it when someone isn't looking at him when he is speaking.

He usually speaks with his captives in a playful tone, but that changes when he gets annoyed. It's not too easy to annoy him, but it's also not too hard. He usually hides his true identity from humans to avoid scaring them, while he's on Earth, and that's why he wears a black cape over his white lab coat, when he goes to Earth to capture humans.

13 is unable to feel physical pain, and his wounds heal quickly due to regeneration. But he has a vulnerability - the regeneration gets slower when his body temperature rises, and his teleportation ability turns off when it rises to a certain point. He avoids using his ability to teleport too often, because it can lead to the permanent standby mode, which only can be fixed with Reality 537's tech experts' help. Because of the high temperature intolerance, those of his kind avoid fire.

He's very easily distracted by even the small sounds, and it angers him when he gets distracted. His captives often take advantage of the fact that he's easily distracted.

He never uses his nature to prove something to someone in an argument - he already knows he's gonna win.

He hates it when his lab is dirty and unorganized and something isn't in its place, so it's always perfectly clean. Everything, including his own white lab coat, is kept clean.

Actually, the true purpose of his experiments on humans is discovering the limits of human body and mental stability, which he often says to the humans who call him a torturer and a villain. He doesn't even deny that he is a torturer and a villain, though, but, as he says, "it's for science!"

When he patches the humans up after the experiment, he does it all with precision, all to avoid the wounds getting infected, because he doesn't want his test subjects to die sooner than he busts their limits.