Okay.
This is a game world where something like Infinity Wars and Endgame has just happened, and people are in the process of picking up the pieces.
Five years ago, something happened -- and while there's an account of that something circulating, it's entirely up to you whether you believe it or not -- that made half the world's human and animal population disappear. Naturally, this caused an immense amount of chaos -- planes falling out of the sky, people dying on operating tables because their surgeons were gone, ancient portals to hell that were no longer guarded -- and what was left of the world's greatest heroes were hard-pressed to deal with these situations, much less the problem of seeking out and avenging this horrific act on the one responsible.
Time passed, and gradually things began to settle into a new, much bleaker normal. And then, yesterday, everyone who vanished came back. (Before you ask, they returned more or less at their original location, unless that would have been dangerous -- then they came back somewhere near that which was as safe as possible.) There was also some sort of tremendous battle that involved the big league heroes and their associates, but the details of that are still very confused.
You were not in that number. You're a superhero, but you're not in the big leagues; you protect a neighborhood or even a town, not a city, and certainly not the planet. You may have been one of the vanished, and are coming to terms with everything you missed. Or you may not, in which case you have five years of memories of things going very, very poorly.
So. What's your story?
The Big Leagues:
Hyperion: Strong, invulnerable, flies, sees everything, confident smile. Doesn't talk about his origins, or much else, just shows up and helps people, whether dealing with bank robbers, supervillains with real estate manias, or kids with cats in trees. One of the vanished; his return is viewed as the biggest sign that things are finally back on the right track. Whether that's asking too much of the strongest man in the world remains to be seen.
Princess: Super-strong warrior woman from a hidden race (the Hesperans), equipped with an invulnerable shield. Did not vanish, but was largely focused on helping her own people, just as annihilated as anyone else, in the last five years. They have left their former sanctuary to settle on the island of Lesbos, since the Greek government, such as it is, is in no position to do anything about them. The Hesperans were one of the major forces of the final battle.
Nighthawk: Cowled vigilante, world's greatest detective. Broke with his fellows over a dispute in policy prior to the Vanishing. Did not vanish, and was active as a crimefighter throughout the five year gap. However, his methods were increasingly brutal when compared to his earliest days, with many of his foes apparently ending up dead -- though no bodies were ever found, nor any murder charges ever laid. Participated in the final battle, but vanished into the shadows immediately afterwards.
Captain Mystic: Daughter of the original Captain Mystic (believed to have become one with the universe long ago), possesses the same mystically-granted super-abilities as him. Returned to Earth to assist during the interval, but remains focused on the rest of the cosmos. Led a small fleet of ships crewed by aliens who were happy for a second shot at the guy who killed half their species during the battle, and who have stuck around to open diplomatic channels with the planet where their people were restored.
Aquarian: Ruler of the lost kingdom of Atlantis, aquatic strong man with the ability to command sea life. Vanished, with rulership of Atlantis passing to one of his consorts, who assisted during the interval. On his return, led the combined forces of Atlantis into the great battle, with the backing of even certain rivals and former enemies.
Whizzer: Green-suited speedster, fastest man alive. Believed to have been one of the vanished, but had actually gone on a dimensional mission just prior to the Vanishing, and only returned a few days ago. His scientific insights, gleaned from this journey, were crucial to the purpose of figuring out how to reverse the vanishing.
Doctor Spectrum: Wielder of an alien power prism that allows him to do more or less anything. Did not vanish, but was horrified by the loss of life and retired as a superhero immediately after, turning the prism over to a trusted friend. Was secretly working on a method of duplicating the prism during the interval, and ultimately led several prism-wielders into the final battle.
American Eagle: Intensely hawkish operator of a flying suit, wields medieval weaponry. Did not vanish, and led the remnants of the superhero society during the interval. Killed in the final battle, apparently sacrificing his own life to annihilate the enemy forces. His funeral is scheduled for a few days from now.
Minuteman: Short-statured scientific genius and self-trained fighter. Did not vanish, and developed a method to correct his short stature during the Interval, turning him into a near-giant. Seriously injured during the procedure which reversed the vanishing, and may be retiring.
Golden Archer: Master archer, employs various trick arrows. Did not vanish, but retired from superheroics to look after his sidekick and younger sister, Burgher, who suffered a relapse into drug abuse shortly after the vanishing. It is not clear whether either of them took part in the final battle.
Lark: Sonic-powered martial artist and assassin. Sacrificed herself to acquire the means to reverse the vanishing, under as-yet-unrevealed circumstances.
Arcanna: Immensely powerful witch, able to command the forces of nature with a twitch of her nose. One of the vanished, returned to play a key role in the battle.
Green Inferno: Flame-generating android, "killed" immediately before the vanishing. Has not been, and possibly no longer can be, returned to life ... but Arcanna is unlikely to accept this.
Silver Scarab: Young urban acrobat and scientist trained by Nighthawk and later mentored by the American Eagle. One of the vanished, still coping with the results of his return.
The Big Bad:
Abraxas: Killed half of all sentient life as part of a scheme to impress someone, then destroyed the means by which he did so in order to prevent anyone from undoing his great deed. The remaining fleets of every major interstellar power indicated how grateful they were by burning the planet where he'd settled to a cinder. A time travelling version of Abraxas arrived in the present just after the vanishing was undone in order to "set right what had gone wrong". Was given a first hand look at what the disappearance was like. Will hopefully not be a problem after this, but who knows.