Welcome back by TryHardNinja (Originally it's Sister Location Song, but author was able to put ALL Games into one big animation! Awesome)

Now we know on all 100%, that in Original Timeline (Game Series), Glitchtrap/Mimic was watching this whole time, how William is suffering, so he chose to enter UCN (he knew about it's events) and it seems he offered William freedom, but in return they'll become one whole being

It's well known Mimic saw William in Tales from the Pizzaplex killing the Missing Children

And he didn't stopped on that, he started copying Purple Guy/The Man behind the Slaughter

Yes, while it's true Glitchtrap and Burntrap are Mimic, but Mimic has William's Memories

And it's understandable for Gregory not knowing who he is in True Ending

But Cassidy and Princess Quest thing is still under question

No, it's possible Mimic has only William's Memories and they never became one whole being

But this Animation shows otherwise

Here are Mimic/Glitchtrap/Burntrap moments (sorry if bad graphics):

I

gnore what is on the both sides, these are lately appearing in every video, even in LunaticHugo's Outro they appearing

Mimic is becoming so famous... damn!

Like taking over other Worlds wasn't enough for him...

Yes, I'm mentioning those Collabs, where he is taking control over other Worlds as well, even if it's Fan Animations: