Lynch, Nevers, John and Ilya

special devices (or technologies) that agents use when working with anomalous creatures

Reverse. It's typically used to "roll back" the effects of the creature's activity—for example, to erase or distort the memories of witnesses, remove traces of an anomaly, and sometimes even reverse any changes the creature has made to reality (such as time shifts or mutations). In some scenes, it functions as a pulse that "resets" the zone to a safe state.

Inverter. This acts more aggressively and directly on the creature itself: it turns its nature inside out, disrupting its stability, weakening or temporarily neutralizing it. Sometimes it's used to sever a creature's connection to its habitat (for example, a factory, a mine, etc.)—this echoes your previous inquiries about mines and mysterious places.

Often these devices are used in combination: first, the Inverter weakens the creature, then the Reverse clears up the consequences and stabilizes the situation.

It is a secret organization (foundation) that deals with problems with dangerous creatures ("beasts") around the world.
Epsilon agents track, study, and neutralize anomalous creatures and threats that could harm humanity. Operations are often conducted in secrecy, sometimes requiring concealment from the general public.

It used to be a mining and production plant, but it closed due to frequent accidents. It officially closed and ceased operations in 1956. The plant itself is also one big anomaly: the corridors are not woven together as per the original layout, the rooms are oddly arranged, the workshops seem to have shifted from their original locations, and the plant itself is of an unimaginably large scale. It is located very far from the nearest town, although the area around it was once populated.

This creature's appearance is quite frightening. It resembles the mutilated body of an unknown dinosaur. Its skin is thick and armored with scales. Black spikes protrude all over its body, often in awkward places. Its limbs are uneven and disproportionate. Its eyes are practically blind, but its hearing is acute. Its mouth has several rows of fangs. Its height is unknown but ranges from 15 to 21 meters.

An experienced agent. He got into Epsilon because he had cancer, and his parents had no money. The people from Epsilon cured him, but in exchange, they began training him as an agent.
A mature man with a brutal charisma. He has dark hair and green eyes. He has stubble on his face and slightly dark skin.
He is strict, judicious, cautious and paramantic, and also has a dry humor.
Never is already tired of the world of secrets, while Ilya, on the contrary, is just beginning to get used to this world of secrets.
Has the same clothes as Ilya and the same set of weapons
his approximate age is 27-35 years old

A guy new to Epsilon. He was immediately assigned to the North, but Ilya settled in fairly quickly. He's quite a significant agent within the organization. He only ended up in that organization because he was accidentally drawn into it and then made an agent.

A guy with light brown hair and brown eyes. His skin is normal-colored. He wears a tuxedo with the Epsilon insignia.

Carries a reverser and an inverter

He often acts intuitively and is often right in difficult situations. He is also good at hiding and very observant.

approximate age: about 19-25 years

A guy who is about the same age as Lynch
He is a writer and very impressionable.
He often displays a more emotional and lively reaction than his friend Yegor. John argues, argues, gets scared, and sometimes feels sick from what he sees, but he never abandons a friend in trouble. He's more straightforward and skeptical. In Pripyat, unlike Lynch, when they were looking for shelter, he showed resourcefulness and ingenuity.

He has dark brown hair with thick bangs and wears glasses.
He often wears a cream-colored sweater with a simple New Year's pattern, dark pants, and boots. He sometimes wears an orange Hawaiian shirt over a white T-shirt, but rarely.

A guy about 20-25 years old
height 180
Black hair, dark green eyes, a typical slightly peach shade. He wears blue glasses, though he doesn't use them for their intended purpose, and keeps them up most of the time. He's often seen wearing a white T-shirt, a brown coat, dark jeans, and black sneakers.
He is reasonable, calm, persistent and has leadership qualities.

He's a journalist and blogger. He runs his own channel about mysticism and paranormal phenomena. He's been to Pripyat and has also encountered spirits, ghosts, and other such things on numerous occasions. He's been through a lot, mostly with his friend John.

His relatives include: Sister Lily Lynch and her son, Egor's nephew - Lucas Lynch

Fun fact: In one of the story videos, he was invited to join the SCP Foundation.