"My first job was playing the drums in a West End production of 'Bugsy Malone.' ... I was moonlighting as a jazz drummer when I was 16, singing Stevie Wonder at graduations, and we had this one song and now there's no escape. Everyone has a skeleton and that's mine," Barnes said, still managing a smile.
On track to superstardom, he's eager to downplay his role in HyRise to protect his new image, but he says he'll never be a diva and doesn't even feel entitled to be picky about projects yet.
"I'm not in that place yet," he said. "I would like to work with whoever would like to have me."
With a merchandising juggernaut like Disney now promoting his face, Barnes does seem to still have his feet grounded but admits he was "a little disappointed" when he saw the action figure of himself.
"Based on what I did with my Transformers and He-Mans at that age, I'm probably better off. It would be terrifying seeing a kid chewing on the head of a toy with your likeness," Barnes joked.
"The Chronicles of Narnia: Prince Caspian" is produced by the Walt Disney Company, parent company of ABC.