There are many fictional organizations the CI took inspiration from, but I consider Metroid's Space Pirates to be basically our reference implementation. Think about it: we have an hostile organization branded as mere outlaws or brigands ("Pirates" and "Insurgents", respectively) by an hegemonic adversary (the "Federation" and "Coalition", respectively) where their facilities clearly show a higher level of sophistication. They unite various strange lifeforms with the common goal of doing evil under an engimatic, unclear leadership. They are strictly dogmatic, dangerously efficient, and can't say no to dipping their toes into ancient, uncontrollable super weapons and mad science.
But the Space Pirates have Ridley. In case you don't know whom I'm refering to, it's this space dragon. Now Ridley is not just a cunning, high-ranking general of the Space Pirates with a long history (and "rivalry", of sorts) with the protagonist, he also is an immediatley re-occuring boss throughout the games. Samus defeats him normally, and the Space Pirates just bring him back, better and stronger than before. There are plenty of different Ridleys: Meta Ridley, Mecha-Ridley, Omega Ridley, Neo-Ridley/Ridley-X and Proteus Ridley, to name the instances that are boss fights.
So whom does the Insurgency have to throw into a fight over and over again, each time geared up with some other unspeakable anomalies from the bottom of our "Hold my beer"-drawers? Ideally somebody with already some rep even outside the wiki (early SCP-lore, before the whole "Engineer"-fiasco)? If we had such a character, we could have something in the way the Foundation has SCP-001, where everybody gets to write an own, parallel version and stuff.
Can anybody think of somebody who would fit this role? I'd recommend making one otherwise, but given how great plans tend to pan out around here, I feel that would only have exactly two authors making versions of it.
Eschew elucidation, espouse obfuscation.
