Object Class: Keter Alias: With Many Voices Appearance: A sightless, red-skinned, quadrupedal lizard-like monster, 2.2m tall and weighing 250kg. Hunting Method: It lures prey by mimicking the voices of the people it has killed and then devours them. Senses: Being blind, it tracks the location of its prey through sound and vibration instead of sight. Personality: Driven by destructive instincts and malice, possessing a nature close to that of a wild predator. Traits: It lacks a digestive system; if food is not digested, it vomits red blood from its mouth.

Object Class: Euclid Alias: The "Shy Guy" Appearance: A hairless, extremely emaciated humanoid monster whose jaw can stretch up to 5 meters wide. Height: 2.23m. Traits: Usually docile, but if anyone looks at its face, it becomes extremely agitated, screaming and entering a berserk state. Danger: If a subject views its face—whether in a photo, video, or in person—it will pursue them to the ends of the Earth to kill them without leaving a trace. History: It once fought SCP-682 for 27 hours; after losing for the first time, it now flees whenever it sees 682.

Object Class: Keter Alias: The Gate Guardian Appearance: A massive humanoid entity with no eyes, nose, mouth, or ears, and no hair. It has numerous luminous wings of fire on its back. Height: 320 meters. Weapon: It wields a sword as hot and dazzling as the sun, which obliterates any approaching target without a trace during combat. Behavior: It stands motionless at a specific location (the entrance to the Garden of Eden, believed to be the intersection of the Tigris and Euphrates rivers), guarding the gate. Traits: If a human approaches, it drives them away by projecting powerful mental commands like "Forget" or "Leave" into their mind.

Object Class: Keter Alias: Humans, Refuted Appearance: A hairless, pale humanoid with a distended stomach and a chicken-like face. Traits: It produces eggs at an alarming rate. These eggs are virtually indestructible and will hatch into new instances of SCP-3199 almost immediately if the parent is killed. Danger: Extremely aggressive and fast, it seeks to eliminate any biological competition to ensure the survival of its offspring.

Object Class: Keter Alias: Hard-to-Destroy Reptile Appearance: A massive, grotesque creature resembling a giant lizard or crocodile-like reptile. Personality: It harbors extreme loathing and hatred for all living things (especially humans) and will rush to kill anything in its sight. Immortality: No matter how much its body is severed, burned, or dissolved in acid, it regenerates perfectly within minutes. It evolves its own body to adapt to the opponent's method of attack.

Object Class: Keter Alias: The Old Man Appearance: Resembles a heavily decomposed, rotting elderly man, covered entirely in a black, viscous substance. Abilities: It can instantly corrode any solid material it touches (walls, doors, etc.) to pass through it. It also freely enters and exits a warped pocket dimension. Hunting Method: It primarily attacks young humans (ages 10-25), injuring them before dragging them into its pocket dimension to enjoy torturing them cruelly.

Object Class: Euclid Alias: Plague Doctor Appearance: Wears the attire of a 15th-16th century European plague doctor (beaked mask and black robes). The clothing is not external but is actually skin tissue integrated with its body. Purpose: It observes humans and, if it deems them infected with "The Pestilence," becomes obsessed with "curing" them (which involves killing and reanimating them). Abilities: Direct contact with its skin causes immediate death in humans.

Object Class: Safe Alias: The Tickle Monster Appearance: A large, gelatinous mass of translucent orange slime weighing about 54kg. Personality: The kindest and most friendly entity in the Foundation, feeling deep affection for all living creatures. Abilities: It induces a powerful sense of happiness and euphoria in any creature it touches. It wraps its slime body around people to tickle them, which can treat mental illnesses like depression or PTSD; it even managed to make SCP-682 happy and laughing.

Object Class: Euclid Alias: The Sculpture Appearance: A grotesque statue made of concrete and rebar. Weakness: If a person keeps their eyes open and maintains a direct line of sight, it cannot move or do anything. Aggression: If line of sight is broken for even a second—even by blinking—it moves at incredible speeds, appearing to teleport, to kill by snapping the victim's neck. Traits: It continuously produces a mixture of blood and feces; its containment chamber must be cleaned once a day by a team of at least three people.

Object Class: Keter Alias: Possessive Mask Corrosive Leakage: A highly corrosive black liquid constantly flows from the eyes and mouth of the mask, dissolving surrounding materials. Mental Contamination: It implants strong hallucinations and impulses in nearby people, tempting them to put the mask on their face. Body Control (Possession): The moment someone puts on the mask, it renders them brain-dead and takes control of the body. It uses high intelligence and eloquence to deceive and manipulate people. Host Decay: Bodies wearing the mask rot rapidly due to the corrosive liquid; once the body completely collapses, the mask returns to a state of waiting for a new host.