I'm majorly into this idea, but I have a couple ideas and I'm not sure which would slot best into the little group that's forming. I hope you guys can help me decide:

-Alien symbiote type, ala Venom or Carnage. It comes from a species who each get to 'dominate' a planet, by subjugating as many creatures as possible with its biomass. In this culture, each symbiote is given one planet for itself and itself alone, so the creature would view the other invaders as pretenders to its new throne/homeland, and feel compelled to destroy them.

-Super Scientist type, ala Doctor Octopus or more specifically, Doc Ock's time as the Superior Spiderman. Would probably tout himself as the "Supreme Scientist" of the world, and all known worlds, and think himself perfectly suited to the task of defeat The Outsiders, which those simpleton heroes would of course be incapable of. Would probably be a gadgeteer, but have one main gimmick(like how Ock has his arms as his 'main thing'.)

-Cowboy type guy, largely based on McCree and Reaper from Overwatch, as well as Bullseye from Marvel Comics and Vigilante from DC Comics. Pistolero mercenary who was mostly in it for kicks and the cash. A little bit of a narcissist, and doesn't really think he can die. He was just doing it for the money and isn't really interested in anyone but himself, his wife, and his son. He thought he was living the good life -- plenty of money, plenty of time with his family, and he'd always gets sprung from the joint by his next employer. That is, until the Outsiders attacked.

-Someone from a future where The Outsiders won and humanity well and truly lost. To this character, that event is well in the past, and they are far descended from one of the era's Great Heroes. They figured they could travel back in time, quickly take over to better shore up the planet's defenses. They were quickly defeated by the planets heroes and sent to prison. They are now desperately trying to gather a team to put an end to the Outsiders.

I have a few more ideas rolling around in case none of these would really work, but these are the main ones I'm considering. Which would you all like to see most?