In sometimes later there got to be people that discover the secret identity of the superheroes and trustfully keep the secret, there they are:

Kira (Charlie, Bell, and Blake's older sister): She found out by secretly followed her siblings to an alley and saw them transform.

Yoshi: It was a prize in some contest that the prize was tarveling the world, Nicola gave Charlie a ticket to give to a friend but he was force by his bullies to take Yoshi with him so Yoshi can see his birth home town and Charlie gets bully free forever. When they arrived, in few days a bad guy trapped the Fusion Force besides Charlie in a bubble, Charlie had no choice but to transform in front of Yoshi and stop the bad guy.

Later on (still at his home town) a powerful evil demon spirit some how took over Tim body that turn him into a demon looking monkey and turn into a giant 50 ft tall demon ape, Inferno can't stop him so Yoshi activate a watch that his grandfather gave him that was a giant robot that needs to be controll inside of it though it and move and talk itself. They fought evil Titano Kong as they can but still he was powerful, Inferno and Yoshi could barely move but won't give up the fight at the monent they felt each other mind and motions that they merge into this http://www.furaffinity.net/view/4819036/ and vanish the demon out of Tim. Now Yoshi is Charlie's friend but the other 2 bullies still don't like Charlie much.

Renny: he's a 18 years old dwarf guy that gets pick on with couple of thugs till Columbus appear and thugs ran away cause of his height so he use him so he don't get hurt by the thugs, later on Columbus having problem with thugs so Renny save him. In few days or months Columbus turth Renny and decided to tell him what he really is.