Does Multiversus have a plot?
From what i know when i played it, there was a mode called rifts were you fight other AI characters and do challenges, these rifts had a story to it, each one leading to the next. There are season's to it i think and its still going on. this is what i found of the basic plot:
Season 1
At an unseen time, Stripe steals Reindog's crystal and used it to summon The Joker. The Joker steals the crystal and creates a "funhouse of dimensional madness". Batman tracks him down and defeats him, but The Joker reveals Stripe has stolen the crystal back. Batman and Velma pursue Stipe. When confronted and defeated, Stripe reveals the gem was again stolen, with no other clue other than the word "MACHETE". Velma, Finn, and Gizmo are confronted by Jason Voorhees, who presumably has Reindog's missing crystal. However, after a final defeat, they do not seem to recover the crystal from him. Somehow, Agent Smith comes into possession of the crystal and is creating his own rift with it. Bugs Bunny and his team attempt to defeat him, but only end up defeating a false computer copy. The Joker, Jason, and Smith have teamed up and created one final rift. After their defeat, Smith warns the Fighters that a greater threat is coming, presumably hinting at The Nothing.
Season 2
Samurai Jack arrives at the Multiverse. After warding off a horde of Beetle Drones in The City of Townsville, Jake the Dog briefs Jack on the mission to save the Multiverse. Betelgeuse has created a rift of his own (presumably with another of Reindog's crystals). He is taken down by Jack and the other heroes, and joins them to prevent going back to the Netherworld. Jack, Betelgeuse, and the other heroes defeat Mojo Jojo in The City of Townsville, but call in The Powerpuff Girls to help stop him for good.
Season 3
The Powerpuff Girls arrive inside an unknown Rift and are immediately on the lookout for heroes, eventually catching the interest of The Rowdyruff Boys and Mojo Jojo himself. After the girls defeat both the Rowdyruff Boys and Mojo Jojo, Batman, who has taken interest to the girls' heroics, meets them and decides to tag along. Nubia searches for an ancient artifact, which turns out to be the Gumball Guardians. There she is recruited to the cause by Finn the Human.
Also for the scooby doo characters, it says this:
- Shaggy's portrayal in the game comes from one year after the events of Scooby-Doo, Where Are You! happened.
- Velma's portrayal in the game comes from an unknown cancelled Scooby-Dooreboot from the 2000s.
- Some of in-game Velma's personality traits also match with those of her depiction's from the 2010 Scooby-Doo! Mystery Incorporated animated show, though whether this is intentional or not remains to be confirmed.
Also these characters are mentioned/featured:
The Caveman as he appeared in "Scooby's Night with a Frozen Fright"
The Green Ghosts as they appear in "A Night of Fright is No Delight"
Mr. Jenkins as he appeared in "Foul Play in Funland"
Scooby Doo
I also just found out that there are comics for the game but i dont think it adds much more.