O5-1: "The Founder".
Male. European descent. American origin. Verified post-human lifespan; 148+ years of age. Varying appearance.
A holdover of the occult organizations preceding the Foundation, so he likely benefits from more preservation techniques than merely SCP-006, and he likely possesses a large degree of anomalous protection. References have been made to "clad in rags and bones"; obvious occult significance.
One possible identity for the original Administrator.
Evidence strongly suggests that he was born Aaron Siegel in the late 1800s (possibly 1866). Certainly, one Aaron Siegel was a physicist studying at Cornell University in 1891, who disappears from the historical record after this year. This timeline doesn't match what we know of O5-1's activity, but given his position and the reality-restructuring events that have occurred, it's entirely possible.
Rumor has it that he's Gears' father. If true, this would make him the Black Queen's grandfather — my grandfather.
Two contradictory sightings stand out. Once in the company of O5-2, appearing as an extremely old man. Once in what appears to be security footage of an underground bunker, appearing as a young teenager.
Why is this the true O5-1? Well, if you look at the note at the top of the O5 Command Dossier and highlight it all, you'll see "-The Black Queen" If you've seen The Black Queen's document, you might think that she is just a "micro-canon" of the SCP Universe, but NO, she actually does play an important part in finding all of these. But as The Black Queen states, "Realize also that the O5 Council might not even exist." Everything made in the O5 Staff tab proves this highly wrong, as Alpha-01 does exist. So, we can move on, knowing that "The Founder" is O5-1.
This is taking lots of time to research…






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