Connor is the main protagonist of the series. He is a seemingly human SCP who possesses an ability that the Foundation has dubbed "regenerative immortality" and serves as a Disposable Class personnel for the SCP Foundation. He is currently in a relationship with Natalie Powers, his psychologist and a side character on the show

Connor is cynical, caustic and sarcastic.

O5-1 is the first member of the O5 Council, the ruling council of the SCP Foundation. As with other O5 members, O5-1 is an enigmatic figure, whose true identity and appearance are completely unknown to the rest of the Foundation, save for the rest of the Council and select individuals. In spite of this, there are several theories as to O5-1's identity and appearance, ranging from being a group of people to simply only existing as a concept.

Enigmatic, Fancy, Cold and Smart

He has a 1930's accent, with a slow tone.



Elegant dog. Boston Terrier

CP-999 appears to be a large, amorphous, gelatinous mass of translucent orange slime, weighing about 54 kg (120 lbs) with a consistency similar to that of peanut butter. Simply touching SCP-999’s surface causes an immediate mild euphoria, which intensifies the longer one is exposed to SCP-999, and lasts long after separation from the creature. Subject’s favorite activity is "tickle-wrestling".