I'm confused about one thing. It's able to perfectly duplicate whoever's watching it, so you're worried about it mimicking someone and escaping. Wouldn't the person it's mimicking have to be watching it for it to do that? Like, in XXXX-5, it doesn't make much sense that they couldn't tell the two apart. Couldn't they have just locked the two up in separate rooms, or just had one walk out of the room?
On the containment procedures, you don't really need to get that specific into the details of how the room that the thing is held in is constructed, unless there's something about that specific combination that makes it necessary. Like, if I put the thing in a 5x5x4 meter room instead of the outlined 5x5x3 meter room, would it make a difference?
Also, I'm pretty sure sub-Euclid isn't a classification. Why is this Euclid anyways? It literally just stands there if nobody is nearby it. It seems more Safe than anything.
The page could be formatted better. The tone also seems kinda off, you used "we" to describe the foundation a couple times, and described the thing as "him," which doesn't make sense because 1. using the passive voice is standard procedure, 2. you stated the thing isn't exclusively male.