There are at least 2-5 main characters. The movie starts off with them sparring or playing hide and seek in this grey compound with within a  forest within a force field (so they’re just trapped there) and they’re all young superheros. I remember one of them being like a teenage Black Panther (he had a black cat suit on and could blend in with the shadows) and another being Bumblebee (she could shrink and stuff). There were at least two more.

They end up fooling around and finding this underground tunnel and they all go down. Inside, there are these suits of superheros that look ratty like they’re old and torn up. I remember one being Superman’s and another being either Iron or Batman’s. For some reason when I think of WHO made the lab, Ant-man comes to mind…

The teenagers have to fight some evil bad guy and honestly that’s all I remember of the movie. Sorry… I watched the movie from 2007-2011, but it could be made before that. It was live-action I’m pretty sure… but because my memory is all funky, it could have been animated too or CGI…