I've done it, I have no idea who has helped me, and I have my suspicions, but I've acquired information about the O5 Council and higher after someone placed a hard drive with files and such on my desk while I was asleep. I'm admittedly tempted to flee seeing as they entered my room specifically and during the night so clearly know who I am, what they are doing and what I am doing, but now is not the time for that. I will be listing all I know on this section of the hidden Database, or perhaps I should say the Dark Database as I've come to call it in my head, and hope by mysterious benefactor continues to aid me. This hard drive has even apparently come with selfies of them, or even photos taken from whatever camera is capturing these photos, some even being on-site as I know these areas.
I have confirmed that the O5 Council consists of thirteen normal members, a fourteenth which acts as the head of the O5 Council, and then above him is the Administrator's Assistant then the Administrator themself, making The Foundation's leadership total sixteen people.
Going by the information presented, there are a good amount paranormals sitting the O5 Council, and strangely a notable amount of LGBT members who seem to make the fact a part of their character, one even using an SCP to get a sex change which I do find quite concerning considering that they are meant to be locking up and looking after SCPs and not using them for personal use unless it's something like SCP-500 where it might be critical, ignoring that said SCP also carries the risk of harming those it is exposed to or even killing them which has to make me question why they would risk allowing one of their top people to be in harm's way or at death's door for such a thing. Touching back to the anomalies though, I'll talk about them when talking about the individual members of The Foundation's leadership below.
Lastly, I must say that Site Aurora might be it, "it" as in Site-01 where the O5 Council are rumored to be based out of. It certainly makes since seeing as its located in Antarctica and has The Foundation's leadership seemingly concentrated there periodically. I can't investigate this myself, but I'm sure someone who is reading this and has the ability will. If it truly is where the O5 Council and other members of The Foundations are based out of, their "Overwatch," then I fear why my benefactor has given me this information knowing what I'd do with it.
Information going top to bottom, starting from their importance to The Foundation then O5 number.
The Administrator, alias of "The Executor," is the head of the SCP Foundation. Their description is unknown save for how they are seemingly covered in a dark robe that hides their appearance much like Darth Sidious from Star Wars and that they are transgender. O5-9 has apparently even "brought them back" before they became transgender a second time due to reasons unknown or not said in my gifted hard drive. They seem to, fittingly for someone who looks like Darth Sidious, do criminal acts, which while The Foundation commonly does so, is still a big thing to be able to confirm, granted the only major one is an abduction which may have been reasonable (see below). They also seem to have various stories or details, some contradicting and others affirming, about themselves which, while expected considering their importance, means I cannot say more out of worry I may give the wrong information. One thing I can confirm though is that they seem friendly to some of the other members of the O5 Council, obvious I know.
The Assistant Administrator, aliases of "The Newbie," "Valkyrie," "The Game Master" and "The Deception" is a minor with the last name of Danford who is of Pacific Islander origin and who was, apparently in his own words, abducted by The Administrator for unknown reasons, and was soon placed as the second-in-command of the entire SCP Foundation. His has a known anomalous property in how nobody is able to see his eyes, even if you get your face right in front of his, as well as word that it is always changing, although I'm sure that has only been said because nobody knows what they look like for certain. He is also, of course, one of the homosexuals I've mentioned up in this section of the Dark Database, with him having pride flags somehow twirling and being around his body while making the effort to look like a woman. Other features about him are his dark skin, smooth and long black hair, and an anomalous flower crown worn at all times. Perhaps most concerningly however are his anomalous properties, something that O5-9 is concerned of according to the hard drive, as he was reportedly living a "normal life" before his abduction, and aside from that he is friendly to the point of being followed by SCP-999 whenever they make contact, and if you know what that thing truly is should you have access to its not redacted files then you can start connecting the dots on why it may be so friendly to him and why O5-9 seems concerned. Also a concern is that they are listed here as being able to manipulate time, memory and the fabric of reality, as well as being believed to be around since far before known pre-history, with my source believing that either they've changed to look like their current documented self or have deceived others into thinking they are that ancient, with them expressly believing the latter. Notably, he seems to favor O5-2, O5-5, O5-9, O5-11 and O5-13 and hates O5-4 which piques my curiosity.
O5-X, aliases of "The Spirit" and "The Professor," and whose real name is Jakob Gorbachev Karishnov, is a Russo-Norweigan man who works for the Russian State in an unsaid position, having connections to its military, politicians, diplomatic services and intelligence services. Whatever position it may be, my benefactor does make note that he is former KGB and held important positions such ones able to influence diplomacy and national affairs. When it comes to his job as O5-X he handles The Foundations financial and intelligence operations on top of chairing, or "directing" as it is called, the O5 Council, having previously been The Foundation's Director of the European Field Office and worked for the Department of External Affairs, being a representative to the United Nations, it's Global Occult Coalition, and the go-between between The Foundation and the Serpents Hand. He is described as a small man who carries himself up high and hides his blue eyes and grey hair behind a brim hat and sunglasses (even indoors, what a douche). His past isn't all that mentioned on the hard drive but it is mentioned that many don't seem to know or remember when he was inducted into the O5 Council, and that he may even have the anomalous property of not being able to age any further, and it is even stated that he may currently be a Russian Oligarch, a clearly powerful one at that, granted that by the lack of results on a search engine save for some appearances it is safe to assume he has other aliases that my benefactor has not given or he rules by proxy.
O5-1, alias of "The Commandant," is an odd character and perhaps makes her perfect to oversee the O4 Command as nobody knows what that odd thing does. She was reportedly a high-ranking member of the American Marines who made it to General and yet no woman who is "tall, extremely pale and muscular" is known, leading to my benefactor's conclusion that she served in some sort of special unit, presumably one with anomalies as her hair is jet black and her eyes are gold, meaning she's either dyed her hair and has done something with her eyes or she is some sort of anomaly which my benefactor believes she is, although of what type he cannot guess due to hardly ever interacting with her.
O5-2, aliases of "The Legislature" but also called "Nick" due to his real name being Nicholas Long, born in 1991. He is a US Marshal who, after a chance encounter with the American Unusual Incidents Unit, was introduced to anomalies and later the SCP Foundation which he became an informant for. After a period of time he got involved with the Ethics Committee, and in time was nominated to replace the previous O5-2 who served as the Ethics Chairman. He doesn't seem like much, but aside from that his physical description including light blond hair and his usual wearing of black outfits or US Marshal uniform, states that he is Floridian, from Fort Lauderdale even, and that he has a habit of taking notes in a notepad that is usually on him and a habit for collecting firearms. Typical American. It seems that, much like in the case of O5-X, while you can search him up online, you won't get many results due to him still being a private citizen and all. A final thing of note is that most of The Foundation's leaders think positively of him.
O5-3, peculiarly under the alias of "The Bureaucrat" despite being the overseer of the External Affairs Department, has a vague description, either due to my benefactor leaving it out or not knowing much themselves. All that is known is that he wears a common black suit and shades and tends to keep to himself to the point he's only really seen my Junior Researchers grabbing food from Site Aurora's cafeteria before scurrying to wherever it is he goes. It also states that he went to college just to get a government job and soon was hired in for a meant-to-be-secret facility before coming into contact with The Foundation who since recruited him. The hard drive also mentions how staff tend to forget what he looks like but says that rather than being due to an anomaly it is most likely due to how rarely and briefly he ever shows himself to them.
O5-4, alias of "The King of Kings" despite being the overseer of the Internal Affairs Department, with the former being "Andromeda" which is probably a former alias instead of a real name, is the O5 that most concerns me as, as stated far above by now, they are the transgender who made used of SCP-113 to change into a man. Aside from being anomalous in that aspect they were apparently born from SCP-166, leaving me to wonder about the poor thing's containment status and any violations of it, and also wonder if we have another of "His Children" to worry about seeing as the mother herself was his child, and with the father being unknown and "He" being known to not be above incest, it's possible that this one may not just be a grandchild. As for a description, O5-4 has been cybernetically enhanced due to major injuries in Foundation service, with no statement on what they were or what they were caused by, and funnily enough despite these they're still partially blind in the left eye. Another criminal on the O5 Council, they are confirmed to be on the French and American Most Wanted lists, probably why they are commonly reported to be seen in a suit, gas mask, ski mask and a backpack on. Another notable thing is how they are usually seen around a small cat that doesn't have information about it on this hard drive. Reportedly, O5-4 has inherited some of the mother's "abilities," but my benefactor even states they assume it's meant they don't require sustenance as there is only one other ability left and it sure isn't manifesting. Additionally, however, they seem to be able to control small amounts of liquid, up to 500 ml, which isn't an ability reported in the mother. As for his position, he was once a Facility Director and a long time member of the department he currently oversees, so after the department's previous head was gone he was chosen to take their place by most of the Council. This comes as a further curiosity however as, according to my benefactor, O5-4 is openly a "pansexual" and is attracted to another member of the O5 Council on top of being connected to Gamers Against Weed and the Global Occult Coalition, and most seem fine with it despite all of that. O5-9 however seems to be very cautious of O5-4, a very common theme with him and many other O5s.
O5-5, alias of "The Jester," is fittingly the overseer of the Intelligence Department as clearly they are not monitoring the outside threats that are acting against The Foundation, although my benefactor has made note that O5-9 seems to avoid calling him by his alias and seems to even secretly visit SCP-035 at times over him for whatever reason. He is clearly an anomaly as his description is that he, aside from appearing out of nowhere at times, is sometimes spotted looking like different people, granted he is always wearing a black and white jester outfit resembling that from the medieval age. Usually he is also seen as a European male with brown hair who allows his unkept hair to cover most of his face but as stated before he can usually change his look. Most don't seem to remember when he took his position as O5-5, but it is known that he replaced the old one who could no longer fulfil his position for whatever reason.
O5-6, alias of "The Insomniac," is the overseer of the Internal Security Department, and apparently another LGBT on the O5 Council due to always fluidly shifting what pronouns are used and their mention of sexuality. Seen in black robes, O5-6 differs from The Administrator in how you can see his peering red eyes, reportedly the result of experimental drugs he was made to take in his youth and now only allowing him to see in shades of red and black. He apparently is known for cold hearted and cynical behavior and being friends with The Administrator, The Assistant and others such as O5-X, and for usually staring at people and things, but otherwise there isn't much to tell, either due to there not being much to tell of or due to them being secretive.
O5-7, alias of "Nine Tails" and her "real name" being Tomoe Fox, is another SCP on the O5 Council, fittingly being the overseer of its Mobile Task Forces. It is noted that O5-9 is also disturbed by her and, like how he visits SCP-035 at times after dealing with O5-5, he apparently is gravely concerned about the similarities of O5-7 and SCP-953, which also has me wondering what he surely must be thinking as well seeing as he even made the effort to see her off-record twice and presumably more. Continuing on, she was reportedly found near the Arctic Circle as a child and soon secured by The Foundation, with her soon idolizing those who found her and in time being allowed to join the Mobile Task Force, fittingly making it to Mobile Task Force unit Epsillon-11 "Nine Tailed Fox," and presumably saw combat at Site-19 as was the sole survivor of her unit after a mission that isn't explained on this hard drive and it even states that she got her squad killed which has me wonder how that even played out. At any rate, after the previous O5-7 was assassinated by an unknown Group of Interest she soon saw herself fall upwards and become the new O5-7. Moving onto the description, it is said that she tends to be quite skilled in engineering and combat, and that she stands at 5'5ft tall with an unusually slim figure, purple eyes and long white hair she wants people to play with, even purring or making fox sounds when happy. As stated before she is an anomaly, but generally her powers seem to be polymorphing, as she can turn her fox ears and tails to cat ears and tails, and can go from one tail to nine.
O5-8 (no information other than "Ah shit brb I got to have my daily therapist session so I don't murder the entire council and where it stands. (This is about -8's lore)" having been said in chat.
O5-9, aliases of "The Last Sane Man" and "Rumpelstiltskin," is meant to be the head of The Foundation's Logistic's Department, and yet seems like so much more. He has been noted in the hard drive to do much more than simply macomanaging and micromanaging logistics to the point of directly heading it instead of simply overseeing it, from going out of his way to ensure sites are properly staffed to even hiring and training site chefs, and as mentioned in the things about others in the SCP Foundation's leadership he seems to even take it upon himself to investigate or worry about the others for an unknown reason to the point of getting in contact with contained SCP subjects. While it is noted that he finds people to have lost their sanity and reasoning abilities so holds himself higher than most others and due to a belief of being better and due to believing it should be done by him due to leading Logistics he will perform side tasks as to make sure things are running smoothly, I cannot help but believe that there is more to his actions than that. It says that he is known by the others on the O5 Council for his actions of ensuring a high quality in personnel, his great care and work in logistics, for strong "Humanism" beliefs, which seem to be his own philosophical branch of Humanism but my benefactor did not describe it on this hard drive. The only other remaining things state that he was once an undisclosed "high ranking member" of the Global Occult Coalition before leaving for "The Foundation" due to the "September Sixteenth Incident," with his background explaining why he is usually the one to jump at the idea for exterminating SCPs and why he was even where he was in The Foundation to replace his predecessor after their death from age, yet strangely seems to be the least trusted on the O5 Council for whatever reason. As for his description, he is apparently "Anglo" and is physically short at an undetermined height, and has a rounder face and a strong jawline, with short red hair and blue eyes, with the reference photo for him in this hard drive, Rumpelstiltskin's portrayal in the Shrek franchise, apparently looking close enough to him.
O5-10, alias of "The Doctor" as if she is Doctor Who,
O5-11, alias of "Wraith," has little mentioned about him despite being the head of the Research Department. It's known that he is an Oriental standing at 6'2ft tall with black eyes and hair, and that he was once the head of an extrasolar site known as "Anvil" but otherwise there is little about the man unless him traveling around a lot to different sites and to meet certain people is something big rather than something the O5s are expected to do. It could however be noted that the lack of information on him, and his pixelating of images of him, mean he wants to remain as hidden as his alias implies.
O5-12, alias of "The Conductor," is the head of the Security Department, having previously served in the military after graduating high school and apparently having fought for the American military in Operation Desert Storm before being scouted by The Foundation due to his apparent capabilities, whatever those were that got him scouted as Site Security instead of a Mobile Task Force member. He was in time caught a raid by the Chaos Insurgency against the site he was working at and was noted for killing a large number of them and summarily became the "hero" who put an end to the attack. What I find interesting however is that he soon began to fly through the ranks, having assumed a top position due to how many security personnel had died in the raid, and after a while having been noticed by "The Executor," the Administrator, who gave him a seat on the O5 Council as the overseer of The Foundation's Security Department, with him also already having had a connection with O5-X before even joining The Foundation which leaves me to wonder a few things ranging from simple nepotism to made-up stories to justify promotions. He is noted to be serious about his position unless around others from the O5 Council or those he considers friends and seems to hold O5-9 as "illogical" for whatever reason, possibly for something simply not said or as I assume possibly for their suspicions of and or concerns over other Foundation leaders.
The final member of the O5 Council, O5-13, simply referred to as "The Janitor" while also having written his signature as "Agony" for whatever reason, is an anomaly that one day showed up out of nowhere in Site Aurora and began cleaning the floor, and whenever asked anything he simply replies "Sweeping" which seems to be the only thing he can say. It is truly a wonder how this one managed to become a member of the O5 Council, most likely due to The Administrator going by what the hard drive suggests. As for his appearance he has a moyai head for a head, and wears a suit with "Aniter" written near the left breast pocket which presumably acts as his nametag, although whether or not it is his name or a mystery brand is still up in the air. What is known however is that he will periodically rest inside janitors' closets and storage rooms, and that he seems to be searching for someone.
I thought that all, or rather most, current things related to the current members of the O5 Council were in the hard drive but apparently there was more after I checked again.