Right, so just incase you guys were wondering, while it didn't get it's 'Arcadia' name until the early 2010s, this story has been in my mind since I was 3 or 4. This is how it goes in it's current incarnation
ARCADIA originally started off as an old idea where Heroes(or villains) with extra-ordinary powers and fighting skills, along with their ordinary companions/side characters were brought from their universes and forced to fight/ are held captive in a 'arena' place, often a ground base, a space station, or even one whole planet. This gathering was started by Derkayes, a power-hungry warrior who infiltrates groups/universes with his army to take over. His goal; Multiversal conquest. His reasoning for abducting the super-powered beings- to siphon off their energy to be used in weapons of mass destruction
However, in his way are the JMP(My mary-sue-ish avatar), Vent(or as he now goes by, Sentinel VX or Sam), and the ZX squad, a group of assembled heroes from the titular city of Arcadia. They usually rescue the heroes, have a showdown with Derkayes' army and maybe even himself, and he usually escapes while the heroes usually celebrate.
Unfortunately, most times the abducted warriors are unable to return to their home of origin and are forced to stay in the city of Arcadia and/or live at the Planet Arcadia is on, Gaia. As for the home galaxy of the heroes, it is either obliterated, destroyed, taken over or left inhospitable with no resources. However, the heroes learn to cope with this. It is often hard to adapt to the futuristic world but they often come through
Eventually, Derkayes would usually either make a new army, recover with his surviving minions, and/or get new generals, which are usually powerful beings near or on-par with him. Over time he usually(often monthly or annually) creates another arena/tournament) and restarts the process, often forcing JMP and the ZX squad to continually battle the stubborn being continually, saving heroes and defeating Derkayes. Often there are a few variations to Derkayes' plan, but mainly his want of conquering the universe continues on
However, villains or enemies of different powers and motives attract both Derkayes' and the ZX squad's attention, and force them to work together to defeat stronger foes. However this is only temporarily
If you need explainations, I'll post the beginning of the story, maybe make a topic for character Bios, and other things, but mostly this topic will be for the main chapters of my story