Equipped with tasers, stun batons, and expandable heavy shields for powerful strikes. Calm and formidable. Identity unknown. Rarely appears, except in special circumstances such as patient escapes.

The only EPU unit whose eyes are visible. Agile and armed with a spear. While slightly weaker than other units, they can still easily overpower any patient. Equipped with a taser and wears a gas mask. Identity unknown. Hates being insulted and will indiscriminately attack any patient who swears at them. Rarely appears, usually alongside Onyx Units. Possesses a drone that can detect hostile patients through walls.

Equipped with a laser-emitting shield, a stun baton, and a taser. Wears a mask that covers the entire face. Powerful and agile. Identity unknown. Only hostile toward aggressive patients. Appears somewhat frequently.

The weakest and newest members of the EPU. Equipped with stun batons and V3-5 electrified shields. Identity unknown. Only hostile toward aggressive patients. Appears frequently.

Armed with a stun baton. The weakest unit, with combat power roughly equal to that of a hostile patient.

Armed with a long staff featuring stun batons on both ends. They suppress hostile patients through indiscriminate force and isolation. Threatening toward hostile patients and often mocks them with a playful tone.

Fast and powerful. Armed with a blue taser rifle, a riot shield, and a stun baton. Responsible for isolating hostile patients. While primarily a threat to aggressive patients, they will immediately shove and restrain regular patients if they display threatening behavior.

Armed with a high-output stun baton that can detonate concentrated energy to knock targets unconscious. Equipped with an energy shield and a taser. Strong and agile. Always serious, they beat hostile patients to the brink of death. Possesses a drone capable of tracking hostile patients or deploying EMP grenades.

The highest-ranking official whom all security personnel and EPU units must protect. Holds absolute authority and has the power to authorize patient torture. Carries a stun baton and is capable of binding and transporting patients.

Larger and stronger than average humans. It takes several security guards to restrain them. Capable of throwing patients or staff members. Armed with glass shards and Molotov cocktails. Currently planning an escape, having failed three times before.