CTHULHU is approaching the wall.
This is not a Cabal plot. This is not the Teacher. This is not Mr. A. The damn thing must’ve just...gotten hungry.
For limes!
Also, humans.
I don't think we can talk or trick him into turning back. Not with this one. This time, it's got to be a brawl. I'm not looking forward to it, but I believe in my team.
You'll have to write stories, due at the end of the day on the 19th, Eastern Time, which use all of us. Not just one of us. Gather us all from our stations to deal with this threat!
The sad truth is, if you make the story too sunny, it's unlikely to be plausible enough to work. I hate to say it, but I... I fully expect casualties.

I know you won't let us down; I hope we will serve you well, too. I am reminded of the Gladiatorial salute, at times like these: "We, who are about to die, salute you."
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Source material:
Gurt
Angel, Angel vs. Medusa
Gnarbrydh
Subject Psi
The Regulator, The Regulator vs. Anansi
Give 'em hell.
~D