I see where you're coming from with this. The PPC is, technically, a group of many people/creatures, but I believe (and correct me if I'm wrong, anybody) the rule for most groups is to treat it as one thing.

For example, we wouldn't say "The Bad Pay organization are against...", we'd say "The Bad Pay organization is against..."

If PPC wasn't in acronym form, then I could see it going either "The Protectors of the Plot Continuum belong to Jay and Acacia." OR "The Protectors of the Plot Continuum belongs to Jay and Acacia." But, since it is an acronym, then it would be treated as singular, I think.

(And then there's the whole discussion of whether each memeber is acting individually or not. In the former, it is plural. But that's a whole 'nother discussion.)

-kA, who nearly wrote "The Agents Against Bad Pay" and wonders how long it would've stayed up, if that was the case.