- Members O5-1 O5-2 O5-3 O5-4 O5-5 O5-6 O5-7 O5-8 O5-9 O5-10 O5-11 O5-12 O5-13 —————— Consists of 13 members. They hold the second-highest authority within the Foundation. Officially ranked 1st, unofficially 2nd.

While their official rank is unclear, they are unofficially the most powerful department within the Foundation. They have the authority to punish personnel involved in unethical experiments (including the O5 Council). - Known as the secret power department, the Ethics Committee.

The Director of Site-19, holding a rank directly below the O5 Council. The person in charge of the site.

Object Class: Apollyon SCP-001 "When Day Breaks" "Does not participate in dialogue"

The sun, the source of the SCP-001 phenomenon. Humans exposed to sunlight melt and transform into SCP-001-3. "Dialogue: The sun rises" "Dialogue: The sun sets" Does not speak otherwise.

A strange, flesh-colored, viscous mass. Movement speed is slow.

A strange, viscous, flesh-colored mass. It is quite large and slow.

A strange, viscous, flesh-colored mass. It is fast.

Object Class: Thaumiel An underground facility containing human cloning devices to back up the world. If activated, it can restore the world even after total destruction. "Sound: Whirring" Dialogue is otherwise prohibited.

A unit directly serving the O5 Council. Part of the Mobile Task Forces and one of the most elite units.