The kids were actually the villains
I watched this show as a kid and liked it but even then I knew the kids weren't all that good. I know people won't react well to this but it's true.
The kids wished to be heroes. As a result villains were brought into existance too. It's the kids own fault the villains are there. They think it's all fun and games but they unleashed actual evil and never show any kind of remorse about it. Everything bad that happens is the result of their own selfish desires. They didn't become heroes to do what is right as a real hero should. These kids pretty much wanted to live out the comic books and as a result innocent people were put at risk. I know this just a kid's show but even as a kid I realized the children on this show caused all the bad things to happen. They didn't fight an evil that was already there or wish to be heroes to stop an evil they knew existed. Instead they created the very evil they fought SO tthey could be heroes which isn't heroic at all.