Everyone Else

If you're reading this after 2020, you are probably familiar with the way viruses work. As the virus spread, it mutated to survive. You and viruses have a lot in common . . . no offense. If you're one of us, you were probably a lot more susceptible. Even if you didn't feel it, you were infected (everyone was, but we only know this now.)
We also know that the virus kick-started your already volatile immune system. At the end of the world, the latent power you and your past lives have been building up manifested. From oppression, chaos, plague, natural disaster, war, death, our bodies performed a Hail Mary. And now, here we are.
You are a superhero who incubated powers that culminated throughout your timeline. You did great!
Now, we need you. We are at war with the same people we always have been; evil, tyrannical people who have never known true pain but so willingly inflict it on others.
But this time, we have something we've never had before.
You.