So glad you asked @rosiehunterwolf !
So my SCP au (while horrendously inactive at the moment since I turned off my asks) is basically the characters of NinjaGo placed into the SCP universe. For those unfamiliar with SCP, it's essentially a fandom run storyline about anomalous entities who have been placed into security facilities by a group known as the Foundation, or the 05 Council. SCP stands for the company's slogan, "Secure. Contain. Protect." This applies to both the SCPs themselves, and the rest of the world.
Another major part of the SCP universe is the D-Class Personnel, as they are who you typically play as in the games. D-Class members are essentially criminals placed onto death row who are given a chance to get time off their sentences/get out of jail. They can do this by participating in experiments involving the SCPs. Basically the Suicide Squad. There's a ton of lore based around the fandom, and the games are very well known (especially the iconic, "Containment Breach.")
In the au I've created, it's kind of like a, "Bad Guys Win," au since the Foundation is canonically not a good group of people. They consistently mistreat the SCPs, and the D-Class personnel, which most of the main cast of NinjaGo make up in this au.
You can find any of the content for the au on my blog with the tag, "scp au," as I tag every single post. It's mostly run by anon asks and myself randomly posting about it, but I've gotten a couple of arts from people like @halfbreeddege and @keity-devil - whose art I have already reblogged! I definitely recommend giving them both a follow, as Keity has also written a one shot for the au!
Also!!! There is a bit of shipping in my au, the more prominent relationships being KaixMorro, JayxNya, ZanexPixal, GarmadonxMisako, and some one-sided SkylorxNya as well as some one-sided ColexZane.