The Protectors of the Canonical Worlds/Shenanigans/Fools 2019

<tabber>Original Joke=
(The intro's right here.)
The last few months had gone rather well. As the agents grew more, and more powerful, they reached the point where they could somehow... snap the canon back. And now, they would go, and finally take on the infamous... "My Immortal".
Deric:It's pretty easy nowadays. Good thing I invented this thing!
Celia:Yeah, I know, right? Our missions are SO much easier now!
Deric:So, who'll be fixing THIS one?
Celia:Well, I did it last time, so.. I suppose you can do it THIS time.
Deric:Finally! It was about time! 
Deric:So, I use use the Canon Restorer, and.. Done!
Celia:Great job! See? You're a legend too!
Deric:Of course. We both are.
Footsteps approached the two. It seems they weren't alone!
???:Freeze! You two, are charged with: Restoring the canon without killing the Sues, killing a Sue in an implausible way without causing further damage, changing the rules so that you got to decide when and what your missions are, being better than the Technology Department in technology, and being blatant Mary Sues. Alita? What are we going to do with these character replacements?
Alita:Well, I've got something, Herald.. How about this Gaster Blaster? *fires the Gaster Blaster.. "killing" the Sue. Instead, however, it formed the words "April Fools!"
Herald:WHAT?
Alita:Wait.. You didn't know that we were making an April Fools' episode? SERIOUSLY?! You didn't get the hints we gave you?
Celia:*laughter* Happy April Fools! And remember, Mary Sues are bad, even if they're PCW agents!
Deric:Especially if they're PCW agents..
Herald:Wait.. If this was an April Fools episode.. Then how did you all use those powers? Even for April Fools, this shouldn't be possible...
------------------------------------
Celia:Seriously, guys. If you want to make PCW fanfiction, don't make your agents Mary Sues! THEY distort THIS canon, and that just makes things far, far worse!
Deric:Remember the rules:Agents have to enter the world in the form of a canonical race, limiting themselves to the powers of that race.
Celia:Canon can only be restored after all the Sues and/or Sue-phantoms are dead. Otherwise, all you're doing it making it look restored by warping THIS canon!
Deric:And unfortunately, we don't get to choose when the next mission is. We'll have to be ready, whenever the-
[BEEEEEP!!]
Deric:Seriously? NOW?
Celia:Come on, let's fix the canon for real again. 
-------------------
Happy April Fools! 
|-|Expanded Universe=
After Herald and Deric left the place, they traveled across a.. planar rift..? The place they're in is.. Okay, yikes..
Herald:..Um.. any idea on where those powers came from? ...Maybe we should have used our Canon Detection Devices.
Alita:If our canon was warped, then the CDD's results would have also been warped. CDD's won't help us here.
Herald:So what do we do to find out how much the world has changed?
Alita:There's a reason why the Internal Integrity Department is a secret. Sues don't know about us. Nobody knows about us except for the rest of us members. Hence, our goal is to do some analysis on the matter. 
Herald:Wait, don't Celia and Deric know about us?
Alita:They think we're just other MSD members, since it has been customary for these agents to free other agents from being Sueified. Agents, when they're not Sues, have learned to spot a Sue from a normal character quite easily. Except for the really new ones.
Herald:So, how can we investigate what the agents did? How they restored canon to worlds without killing Sues? And how they did it in a non-believable way without distorting canon? I'm quite sure they're doing it by distorting OUR canon. They seem to be character replacements.. Though I'm not sure how to deal with them, nor where the real ones are.
----------------------------------------
Alita:Well, we simply look at the mission reports that they sent us, analyze the timeline in question, and try and locate the canonical distortion. We can't use any devices mentioned in the reports, because they've been affected by this. Anything they did that contradicts the nature of the multiverse must have come from a distortion.
Herald:So.. What would happen if people did know about us?
Alita:If this department was breached, then the very form of correction that prevents the PCW from being warped by Sues would be gone! There would be IID bafic, completely ruining any chance of salvation!!
Alita:Then again, there might be someone overseeing us as well, that literally nobody at all knows about. If that were the case, then perhaps they could free us from the distortion effect. Even still, it's best that nobody knows about us. </tabber>