Question for my fellow MD fans. Do you think the Solver is actually a classical demonic entity? Biblical imagery abounds in the show; some subtle and some not-so-subtle (Louisa literally refers to Cyn as "that little antichrist"). There are plenty of other hints at a supernatural contest of good and evil. Think back to the image we see in N's memory in the manor library:
The wings are the normal disassembly drone style that look almost angelic in nature. The chains and (very definitely) blood conjure the idea of a tortured being succumbing to demonic corruption, hinting at the fate of poor V. But the next time we see her, she has wings resembling those of a demon:
And when N and Uzi return to the library, the whole scene is clear except for some leftover blobs on the floor and the glyph of the solver, drawn in blood. Note that the largest one has a much more organic and sinister appearance, similar in concept to the Evil Eye:
Combine all this with the fact that the Error 606 shown on the infected drones could be a reference to the number of the beast (c'mon, we all know YT would have demonitized Glitch if they used 666), and that drones that have gone Full Solver have the glyph across their entire visors (wearing the mark of the beast) ... that's some pretty heavy symbolism for end-times mythology.