What would be a good name for a "Mythical"/Unkillable Terminid and Illuminate?

We already have names for the Mythical/Unkillable specimens of Helldiver and Automatons in:
John Helldiver (Who saved us from cannon hulks existing and occasionally boosts liberation by >10%/hr)
Cyber Stan (Also known as Cyber Stanley, aka the trooper that is inside every bot unit)

But I haven't actually seen an equivalent for Terminids and Illuminates?

I do know about some of the legendary cryptids we've seen such as:
The Headless Overseers whose tyranny is SO STRONG they don't need a brain to function
The Frictionless Charger that slides around with enough sheer aura to kill on contact
The Leviathans and Dragonroaches that fly without engines/wings alive by sheer force of hatred for liberty

But we don't have some general term for them to my knowledge? I personally vouch for The Prime Meridian as the Mythical unkillable terminid nickname - the idea of a terminid that somehow not only survived the Meridia collapse but is in fact still terrorizing us to this day, but I honestly have nothing for illuminates and I want to hear what y'all come up with