Now that I think of it

We all know the first kid that was apart of doet fell in

Though the other two kids... How did they get in

Most likely captured by scientists or doet

Though who thought about this it could be that Kevin fell in and they got the idea or maybe it was from the other monsters

By the way buggy died Mommy long legs definitely died so catnap must be alive just being stabbed in the neck

Next chapter huggy wuggy and catnap may appear next chapter though huggy wuggy is shown at chapter 4 and there's no way two main monsters from two other chapters might not happen though

Plus doet could still be alive but for that there will be 1 - 4 more chapters

Above all this theory's doctor might make something and Barneybie is also alive so the doctor may merge other monsters

But at that one place in chapter 3 there were alot of plushie smiling critters and huggy wuggy but I don't know if Mommy long legs was in the monstrosity but there was a slime holding the smiling critters and huggy wuggy together and I am sure it was from doey

With that information huggy wuggy is gonna be there next chapter likely catnap maybe and I don't think doey is gonna be there but maybe some moments where we see doey

And Barneybie is definitely gonna be there but idk boxy wasn't in this chapter those other toy besides Mommy long legs catnap huggy wuggy. didn't came back in a other chapter, right? So Barneybie is most likely not to come

And chapter 5 may be a cliffhanger or where the factory destroys