List of Characters:

Protagonist(s): 

Daniel Summers:  one of the main characters; not a superhero but has abilities that can help someone in need. Daniel usually saves the day. He helps Simon and Eric. But when he he falls off of a trellis at Simon's house his friends think that it's the end of him. Luckily, they're wrong. After a few days he's better and is back to full health and is helping people, once again. 

Main Character(s):

Eric Beryes: another main character that usually rescues whoever is in trouble. Usually Clay and Bud hurt/harm Daniel and Molly, but they're scared of Eric since he has better abilities. Eric is Daniel's first friend.  
Mollie Harris: a flyer who always hangs out with Eric and fights danger against Bud and Clay. She is the one who always pushes Daniel to help more and more. If it wasn't for her Eric would have lost his powers when he turned thirteen.  
Simon Smith: a superhero who can control electricity. He can electrify anybody who comes in touch with him. He is also the kid who turns thirteen and loses his powers. Daniel tries to help Simon before his thirteenth birthday, by staying with him. He tries to kill the villain that is stealing his powers.

Not so Important Character(s): 

Parents: they help the superheroes and bring them back to health once they're hurt. 

Gram: Daniel's grandma who is sick, who caused everybody to come down to Noble Green. If it wasn't for her Daniel wouldn't be what he is now and he wouldn't have all these new friends.

Antagonist(s): 

Bud Biousreen & Clay Biousreen: two twin problems that are always either interacting with Eric and Molly or harming them so it takes longer to get their job done. They're always interfering with the superheroes powers, making them harder for them. Clay and Bud are very close friends with the villain who's stealing their powers. 
Noble Green: the bad villain who takes away the superheroes powers at the age of 13. This is the super villain everybody is trying to kill, so their heroic powers don't vanish.