Look Outside + Generator Rex - same universe headcanon
So the headcanon I have is that Look Outside is a prequel to Generator Rex (picking up after any ending other than either of the perfect ritual ones), with The Visitor's arrival being the catalyst for the Nanite Project with the initial being to cure all those who were transformed by The Visitor into having strange and all unique biologies separate from their initial forms with the small robotic cell-like nano machines. But in the end, the project only succeeded in extending The Visitor's time watching the planet for all intents and purposes.
And because of that, those who were cursed by witnessing The Visitor's form would be the predecessors to the Exponentially Variegated Organisms created by the Nanites with the unfinished version of the project not being able to fix any of these cursed individuals but the sliver lining to this would be that Rex Salazar can still return them back to the way they were before The Visitor's influence fell upon their clueless souls.
edit:
That last headcanon was pretty well held together and logical, like if Generator Rex had a fourth season and it had Look Outside's storyline within it, then that wouldn't go against the themes of the show or pre-established lore.
But I am a crazy person, and a logical headcanon only comes out of me for so long, and I bite onto crazy ass shitpost headcanons, so the following is born from that strange, unknown illness of mine.
I really got into Risk of Rain 2 a couple days ago, and I was trying to think of a "same universe" headcanon for the games especially after watching minaxa's amazing video about the game's lore and the biggest thing I took from it is how Petrichor V (the planet that's the main setting for both of the games...and Returns) is akin to Half Life's Xen parallel universe and that's to say that nothing on the planet was oringally native to it including the planet's hero who saved and then brought all of those creatures onto the landscape of the great baron planet, along with his brother, who was also there.
Now what does that have to do with Robot and Monster?......Uhhh, let me explain despite how crazy this headcanon's nature is. The world of the show is set in a universe with monsters living in harmony with machines akin to the planet of Petrichor V which has roaming golems and machines (the lines between the two being blurred) alongside all the organic life forms that were brought onto the planet's surface but intrestingly they're two sides of the same coin as Robot and Monster despite something like Monsters, Inc existing with tons of creative and amazing creature designs, the show leans way too heavy into the robot half of the show to the point that a wiki has it's two most poplular sections of the wiki being about the machines of the universe meanwhile the section about oragnics is seemingly forgotten about. Meanwhile, Risk of Rain's world seems to mostly be home to all types of monsters and strange creatures alike, from animalistic beetles to the massive bear/fox(?) hyprd Grovetenders who feel like they were plucked out of a traditional fantasy game.....like Minecraft, for example.
The Alpha Jay Show made a good point about how Robot and Monster was really lacking with its world-building and universe, which is a double-edged sword as that gives the show a carefree kind of enegry but when going up against SpongeBob on the same network really didn't do it any favors which pairs up nicely with how Risk of Rain has a rich universe in it's games that is never truly explored to it's fullest with a lot of it's world-building and story being locked behind collectable data logs on the items and monsters of the games along with said lore being pretty rich in it's own right but is seemingly missed by most players because of how in the background it is.
This is all to say that "Providence" (not his actual, he would eventullay be replaced with False Son after his passing), Acrid (after the events of the first game but before [and later after] the events of the second) and "Heretic" aka Kur-skan (before her death of course) from the Risk of Rain universe would have been perfect Robot and Monster side characters, so my headcanon for the show is that it's set on the lands of Petrichor V because that concept fascinates, and I feel like the properties fill in the gaps with one another.