This sounds interesting enough that I might give some of these a run. I'd like to know that I'm devil's advocating some decent stuff :P

The risk of any of the massively overpowered Canons (the Borg, the Replicators, Chaos, etc.) becoming aware of the PPC is a mite bit overemphasized, in my opinion. Why? It's quite simple. For such an invasion to be Canonical, it has to be published as Canon. Some author out there has to discover the PPC, decide they don't like us, write an entire invasion... and then convince editors, publishers, etc that it's actually a story worth printing. Not going to happen.

On the other hand, if someone writes it without publishing, it's fanfiction. We happen to be very good at beating down fanfiction.

For that matter, if an author writes something including us, regardless of if they get published or not, we are the ones who decide if it is Canonical or not. If we don't want it to be canon, it's... not. And it's as simple as that.

I am going to assume that having a Great Unclean One as an Agent accomplishes something for your story-telling and narrative, i.e. there is a purpose for it being a Great Unclean One instead of, say, a talking aardvaark. If you could figure out what that purpose is, it would be easy to think of an Agent who fills that niche without being a piece of an evil god.

Since what we have is a multiverse, could it be that Chliever The Corroder could be reabsorbed only if he is in his original continuum? After all, the evil god is supposed to be present only there. If Chliever isn't in his reach, taking him back would be quite hard. So, keeping him out of Warhammerverse should be enough.

That's my two eurocents (€ 0.02) about it.

You're just trying to get around it, so stop doubling back on the issue. You un-canoned your agents, the die is cast, have the spine to stick to that. Though I doubt anyone'd stop you making some new ones if you wanted.

As far as I'm concerned, you're more than welcome to come back to the PPC - of course we love people here with good intentions, and I'm really glad you're trying to fix this particular issue.

However, I don't think the Agent should come back, at least not as an actual piece of a god. You wouldn't be able to get rid of that hypothetical, I think; evil gods and their pieces can't have their inherent natures altered that drastically.

On the other hand, there's nothing stopping you making up new Agents - or, as suggested once when this issue was brought up a while ago, have the Agent be a cultist of some kind who just believes he's a god-piece. Or something along those lines.

*has run out of useful suggestions, so will leave it at that*

I know this Isn't Done, and I'm breaking all kind of laws and whatnot, here. But.

Basically the problem is thus: one of my Agents was kindasorta a piece of an evil god a little. The issue was raised that should my Agent be hypothetically killed, said evil god would reabsorb him and thus know how to get to HQ, and invade the Word Worlds from there. I had actually never come across this detail in my research on this Agent's race. But if it is a real problem, modifications need to be made.

We are a writing community. This problem is exactly as real as we make it. If you don't write the re-absorption, HQ, and take-over, it simply does not happen. Perhaps the evil god has more on his mind? Perhaps he is wise enough to know that the deities of those worlds would fight him tooth and nail, good and evil alike? Who knows? The point is, it's only a problem if you choose to make it one later, and that counts as an Emergency, for which you'd need a consensus of approval, IIRC.

I'm all for internal continuity, but it's also a good idea to keep in mind that accidentally leaving a little plothole that would, if this was real, destroy reality... will not actually destroy reality. If you want to keep writing, nobody's stopping you. If you'd rather have your Agents make a visit to DoSAT and write in that fix first, go ahead. But I don't think it's a big issue at all.

I typed "a while ago" and then "a while back." Sowwy.