Guess Who This Mean-Muggin' Kiddo Turned Into!

Before this cool lookin' kid with shaggy hair was singin' around town and acting on the big screen, he was just dilly dallying in England -- until he became a child actor on Disney's "The Lodge" -- and playing musical instruments like drums, piano, and the guitar ...

He's collaborated with some of music's biggest stars -- Machine Gun Kelly and Avril Lavigne just to namedrop a couple ...

He's such a rockstar that once you go to his awesome rock shows you'll be saying, "I think I'm Okay!"