Hiya Amy! I'm Mal, looking forward to seeing the Doctor in action. As for me I've got:
Peter B Parker, from Into the Spider-Verse. He's older and not quite as shiny new as some of these other younger spider people, but he still does his best. He's been steering clear of the portal cause it kind of freaks him out, and doing his best to help out where he can this side of it.
America Chavez from 616 comics, she is feeling increasingly trapped in this place, normally she has the ability to open star portals and travel through the multiverse, and finding herself without that power is leaving her a little desperate. When she's not wandering around punching the air she's checking out the door and trying to think up new ways to get out.
and
Tony Stark from Avengers Academy, the younger happier version of MCU Tony. He's in his 20s, he's Iron Man, he loves dancing and cheese, and is working on helping the town with things they might need whether it's a power grid or video games.