Gem-chasing group: Currently contains Trigun, Teen Titans, Submachine, and Cowboy Bebop.
After Triguniverse split apart, Trigun — and a bunch of other fandoms who met up with Trigun around that time — all struggled to figure out what to do with SU's gem in order to "revive" her. Before they could figure it out, though, they were distracted by the pillar of light that shot into the sky when Exdeath escaped from FF's ship, and then they were attacked by a group of goblins who also escaped at that time. One of the goblins managed to get a hold of SU's gem and ran off with it. The group chased the goblins, eventually making their way to the goblin who had the gem (except for Space Dandy, who made a wrong turn somewhere along the way), only to find that the goblin had its arms sliced off and the gem was in the possession of Exdeath, who then vanished.
Screaming Group: Currently contains Touhou, A Dark Room, Don't Hug Me I'm Scared, Star Wars, Megaman, Mass Effect, and Type-Moon.
The screaming group didn't form out of anything special — they were just a bunch of fandoms who all kind of gathered on the streets of Fandom Square, discussing the apparent chaos that had happened recently. The group, which originally consisted of DHM, SW, Megaman, and TM, were then joined by Mass Effect and A Dark Room, who were at the crash site and sought out other fandoms after what happened with Exdeath. Touhou also joined them, although she mistook DHM for a Trickster and tried to attack them. The conflict seemed to de-escalate when the other group members explained that DHM was not a Trickster, but then things re-escalated again when DHM felt the need to sing a song to Touhou about making assumptions about people based on their appearances. Then the group got DHM under control, so now things are chill again.
Museum Group: Currently contains Doctor Who, Sherlock, Final Fantasy, Dragon Age, and Fire Emblem.
The group is currently being attacked by Daleks. They just now heard the sound of the Doctor's TARDIS lifting off, to which Sherlock thought that the Doctor had summoned the TARDIS to them, but he had done no such thing. What actually happened is that a Dalek managed to enter the TARDIS, which then freed RvB (who had previously been chained up inside the TARDIS), and then RvB attacked the Dalek, opened up its metal suit, took the real Dalek out, and then climbed in and took its place. RvB then forced the Beatles (who had previously just been resting in the TARDIS and doing no harm to anyone) to fly the TARDIS somewhere else, holding him at gunpoint (er, laser-point?).
Idiot Route Group: Currently contains JoJo's Bizarre Adventure, Adventure Time, RvB, the Beatles, and Undertale.
JoJo, Undertale, and AT were all just sort of derping around on JoJo's island when they saw the TARDIS appear nearby. RvB then zoomed out of the TARDIS, dragging the Beatles along with him and tossing him onto the ground. The Beatles then struggled to explain how dangerous and unpredictable RvB was, urging the others to keep an eye on him. JoJo, however, misinterpreted his warning as being about the TARDIS's owner — the Doctor — rather than the metal-clad being that had just exited it. JoJo apparently doesn't like the Doctor very much, and so his response to all of this was to attempt to destroy the TARDIS by furiously punching it. Thankfully, that did not destroy it, and the Beatles went on to nag JoJo about what a terrible idea that was as he made sure to actually lock the TARDIS door this time. Meanwhile, Undertale has decided to mess around with RvB a bit and learn more about this "dangerous" and "unpredictable" entity.