Pop Quiz: Guess the Star Sibling!

He's got his own fans, thanks to his super-famous sibs. But do you know him? See how well you can spot the family resemblance!

Q: 1 of 11

Correct Answer: Nick, Joe and Kevin Jonas

Frankie – who appears on his brothers' Disney Channel show, JONAS – is called "the Bonus Jonas" by fans of the Jonas Brothers, but he prefers another nickname: "Frank the Tank," Will Ferrell's character in Old School. "I have it engraved on a brass ring I got at Disney World," the littlest Jonas told PEOPLE.