Trivia

In 2006, he announced that he was unable to continue performing with The Wiggles, due to a chronic condition known as orthostatic intolerance. He'd been suffering symptoms for many months, affecting his ability to perform. The condition was related to blood pressure and though non-life threatening, affected his balance, breathing, and coordination.

Met fellow The Wiggles Anthony Field and Jeff Fatt while they were in the 80s pub rock band, The Cockroaches. He once acted as the band's roadie.

He was originally asked to return to the wiggles until August 2012 to help transition from Sam Moran to a new yellow Wiggle, but once Murray Cook and Jeff Fatt decided to retire at the end of the year, they asked if he would extend his stay with the group until then so he would leave alongside them to which he agreed.

Performed solo at the Stardust in Las Vegas, Nevada (2003)

As part of The Wiggles, Greg plays the yellow one and drives the big red car.

Is one of the Four Horsemen of The Wiggles Apocalypse along with Murray Cook, Anthony Field and Jeff Fatt.