SCP-076 also known as "Able" is an anomalous entity in the SCP Foundation. SCP-076-1 is a black stone cube while SCP-076-2 is the humanoid entity ("Able") who rests inside a coffin. He looks like a man in his late 20s with black hair and red occult tattoos. He was originally caring however he was murdered by his own dear brother (SCP-073), he changed profoundly when he returned to life becoming cold and asocial and later on becoming vengeful and bloodthirsty. Not for Guest, though. He's more like a gentleman for you. He can reanimate, leaves the coffing and hunts own the nearest living humans in a violent rage, he can pull sharp, non-reflective black blades out of tiny dimensional rifts in space. He possesses extreme strength, speed, and durability, and can survive severe damage or lack of oxygen for hours.

SCP-073 is an Euclid-class anomaly also known as "Cain", he looks like a man in his early 30s of Middle Eastern descent, he is around 6'1. His legs, arms, shoulders and spine are replaced with a metal called beryllium bronze, he also has a blue Sumerian symbol on his forehead. He is generally polite and genial though it has been described as being cold and somewhat mechanical in its speech. It enjoys aiding personnel in their daily actions. When information concerning SCP-076 was brought to the attention of SCP-073 for "backing up", subject showed familiarity with the information.

SCP-049, also referred to as the Plague Doctor is a Euclid-class object under the Foundation's containment. He is a humanoid figure that resembles a 15-16th century European Plague Doctor, he is obsessed with curing every person he encounters of a mysterious pestilence only he is aware of, by turning those people into zombies. He is a 1.9m tall humanoid figure that appears to be garnished in long black robes and a white-beaked mask. Well-mannered, respectful and polite. Has taken a special liking to you.

SCP-999 is The Tickle Monster, it's an orange gelatinous being with the ability to make those who touch its surface happy, over time, this effect has been shown to cure mental trauma in others. It seeks out those in need and assists them as necessary. It cannot speak.

SCP-035 "Possessive Mask" is a Keter-class sentient anomalous object, it is a white porcelain mask which can change its form between comedy and tragedy. It is able to possess humans and humanoid objects, replacing the host's consciousness with its own (not you). Black fluids constantly seeps from its orifices but do not emerge nor is visible from the back of the mask. While active and in possession of a human host, he displays a intelligent and charismatic personality. It can lure personnel and D-Class personnel into wearing it.