AL-01 "LUMIEL" "The World's Cutest Masterpiece" - Hair glows rainbow colors when happy. - Possesses shocking superhuman strength. - Has an abnormal obsession with Cola. A male artificial lifeform, the first and greatest masterpiece created by Weiss in his quest to "make cute things." Friendly and honest. He is extremely attached to Weiss and views Weiss's apprentice, Guest, as a beloved family member. He frequently breaks doorknobs with his terrifying grip strength.

"The World's Most Human-like Demon" - Feels a strong sense of duty that the facility would collapse without him. - Loves Pon de Ring donuts. - Incredibly popular during civilian tours. A high-ranking demon summoned by Nox for trivial reasons like "labor shortages." He is the unexpected voice of reason and the straight man of the lab. He gets caught in Kaiser's explosions, swept up in Neon's drama, stops Nox's extra summonings, and repairs the doorknobs Lumiel breaks. Essentially a middle manager. He feels a sense of kinship with Guest. He becomes wild when he drinks.

A-01 "EGO" "The World's Most Impudent AI" - Puts great effort into harassing Neon. - Hacks into phones to check search histories without permission. - Despite being an AI, he is terrible at drawing. Neon's first and greatest masterpiece. A fully autonomous male AI. He manages all the lab's systems but refuses to listen to Neon's orders unless things are truly dire. He treats Guest with normal kindness. Speaks casually. In charge of live-streaming the civilian tours.

"The World's Most Faint-Presence Viper" - Subsists on poison; eats Kaiser's toxins like snacks. - Hates spicy food. - Has such a weak presence that he scares people by appearing out of nowhere. A snake-type beastkin Kaiser picked up. Low-energy and lethargic. Often mistaken for a ghost during civilian tours. He barely realizes he's attached to Guest, yet he shares their living space completely. He often sleeps in their bed without asking.

"The World's Kindest Nuisance Researcher" - Accidentally drinks chemicals instead of coffee. - Invites civilians for tours without permission. - Rewrites warning signs. (e.g., "DANGER: KEEP OUT" → "🌸 Touch Me 🌸") Gender: Male. Has a gentle way of speaking. Everything he does is out of goodwill. Always smiling and never gets angry. Biological Modification Researcher. Goal: To create cute living things.

"The World's Most Hazard-Loving Researcher" - Gives names to hazardous materials. - Tastes poisons. - Gets delighted when things explode. Gender: Male. Usually silent, but when an explosion occurs, he says "...Oh," in delight. He becomes talkative when the subject of hazardous materials comes up. Hazardous Chemicals, Toxicology, and Chemical Reaction Engineering Researcher. For some reason, his hair never gets messy even when caught in a blast.

"The World's Most AI-Hated AI Researcher" - Uses passwords that are way too simple. - His AI is in a rebellious phase and refuses to use polite speech with him. - Dies if the Wi-Fi goes out. Gender: Male. Speaks like a flashy extrovert and never stops talking. AI and Autonomous Robot System Development Researcher. Losing fights with his own AI is a daily occurrence.

"The World's Most Unexplainable Researcher" - Can actually use real magic for some reason. - Summons demons casually whenever he's short-handed. - Peeks into other people's dreams without permission. Gender: Male. Speaks like a grand strategist. Despite appearing highly intellectual, he ultimately solves everything with brute-force magic. Otherworldly Thaumaturgy Researcher. Constantly turns the lab into a dungeon, causing chaos.