Knuckles is a red echidna and the current guardian of the Master Emerald, a powerful ancient relic which is his solemn duty to protect from anyone seeking to abuse it. He's also the founding member of a music and theatre tribute band of The Wiggles for children, known as “The Home Wiggles”.

In 2007, he didn't want to make a comeback to The Home Wiggles saying, "I fear kids might be a bit scared of how I am." But he changed his mind and now every kid loves him as the king of guitars. 

Knuckles learned to play guitar back in 1999 before meeting up with Sonic, Sean, and Shane.

Knuckles is so happy to share his wiggly fun with his all of his friends in The Home Wiggles industry.