MechaGrima

Interestingly, SCP-055 was partly written by the same person who wrote 3125 (qntm). This may be a stretch, but there's also the fact that they're numbered 055 and 3125 (= 5^5), and now we're talking about SCP-5000 and వ's whole thing is, y'know, the number five.

EDIT: Also, I don't think it's a coincidence that in https://scp-wiki.wikidot.com/the-wild-light the Antimemetics Division actually debates wiping out humanity to prevent వ from manifesting, but decides not to.

Hughes stares darkly at his paper. "We could exterminate all intelligent human life," he says. "If there are no sapient hosts in this universe, SCP-3125 can't incarnate."

Maybe SCP-5000 is just a timeline where that decision went the other way?

I kind of assumed the "entity" was SCP-3125, or at least some aspect of it.

Replace a random knight with Ferdinand von Aegir.

Dr. Who?

Fire Emblem: Three Houses

It very much depends.

Looks like Mordor took Gondor's dor with the Grond-dor

From the moment I understood the weakness of my flesh...

JUST ANOTHER BRICK IN THE WALL

Not if you're talking about the character from Fire Emblem: Three Houses. Then they're all just ɛ

malloc

Tell me that isn't the name of a demon.