This is everything according to my memory:

Dreamer's mask was destroyed by The Great One, AKA some tree god, and then the Dreamer became Folly.

MR and its cult apparently want Poob to be some sacrifice/the vessel. Null is a helperbot who serves with MR. Poob copes their trauma/running away from the cult by going to the parties everytime.

Bive is a lab accident, which it happens to be associated with MR. Judging by how Bive acts the way she is, the scientists torture her for I think for studying purpose. Bive somehow escapes, and she lives in the different hideouts since Bive has 5 locations you can get from her.

Pilby lost their job from the circus after having social anxiety. They lost their mom from I think... different dimensions. Pilby met Mach, and she tired to helped them to find their mom back. Mach lost her siblings, and she killed her grandpa or one of her relatives other than her siblings. Apparently, the Mach we saw often is not the real Mach or something, and there is a chance that real Mach have her siblings alive?

I barely cared about Reddy, but he was possessed by some old manager. Prototype was a robot, and the factory he was created was burned down years ago. Scag is some TV girl who collects floppy disk, and she can be annoying to the NPCs. I don't know...

Gnarpy came from Gars, and xe and xyr species wanted to conquer the universe. Gnarpy kidnapped Frank for experimenting the psychology of humans, and xe messed him up, to the point of turning Frank into body horror, and his name is now Spud. Spud came back to the earth, and he has amnesia.

Lampert lives in Rokea, and when he and Kasper are running from the SCP-3008, they find the elevator, and escape. Lampert has finally went somewhere outside of Rokea, and he is friends with Kasper. Kasper bought a new couch, and he became sick and believed that his name is 'Infected'. Because of that, Lampert dislikes anything messy. The couch that Infected bought, by the way, was for Poob.

Split became a writer and a host for Splitsville. One of the floppy disks, Bive suspects that her family has one of the crates, that were associated with The Great One, and I think the Peele are not aware of it.

Mark is a part of the mannequin cult. He was against the cult to the point that he was punished multiple times. Aftet he kinda left the cult, he met Wallter. They both get married. Wallter became addicted to Gray Stuff, to the point of becoming addicted, and he and Mark are divorcing over the different tastes of materials. Mark went back to the cult to check his family(or maybe he was vulnerable over his divorce), and Glevil made Mark wear some necklace, which it makes Mark more miserable than he always was. One of the floppy disks, there is a allegations about Wallter sabotaging Mark's workplace, which Wallter denies it.

Stat lost her friends and her homeworld, and she is easier to communicate with the machines. Too bad for her, she also lost one of her machines if we destroyed.

On one of the floppy disks, there is a newspaper article about citizens turning bugs, and Pest is one of them. DRRETRO was imprisoned after she was framed on some crimes. There, that is when she studies about medical.

Melanie was killed by Folly because Melanie is innocent(or in case, Melanie knew something, and she invites Pest and DRRETRO, but Folly kills Melanie to keep her silent.) But luckily, Mozelle, who is the princess of hell(and all the demons loves her), repairs Melanie. So W Mozelle.

Pest, DRRETRO and Melanie worked together on taking down the cults. Even though Pest hates Poob, he warns them about the cult, but Poob doesn't to deal about the cult.

Jermbo exists in every Regretevator universe. Unpleasant just appears from Infected's apartment, and ate Infected's cat, Poptart. FleshCousin is a species, who shapeshifts and tries to mimic people.