Name	Known for
Luke Jacobz Self - Host Self - Host See fewer	McLeod's Daughters (2001)
Guy Sebastian Self - Judge Self - Judge See fewer	Australian Idol (2003)
Ronan Keating Self - Judge Self - Judge See fewer	Notting Hill (1999)
Natalie Bassingthwaighte Self - Judge Self - Judge See fewer	Neighbours (1985)
Mel B Self - Judge Self - Judge See fewer	Spice World (1997)
One Direction Themselves - Guest Judge Themselves - Guest Judge See fewer	One Direction: What Makes You Beautiful (2011)
Alicia Keys Self - Guest Judge Self - Guest Judge See fewer	The Secret Life of Bees (2008)
Kesha Self - Guest Judge (as Ke$ha) Self - Guest Judge (as Ke$ha) See fewer	On the Basis of Sex (2018)
Usher Self - Guest Judge Self - Guest Judge See fewer	The Faculty (1998)
What About Tonight Themselves - Contestant Themselves - Contestant See fewer	The X Factor (2005)
Good Question Themselves - Contestant Themselves - Contestant See fewer	The X Factor (2005)
Dandd Themselves - Contestant Themselves - Contestant See fewer	The X Factor (2005)
Fourtunate Themselves - Contestant Themselves - Contestant See fewer	The X Factor (2005)
Samantha Jade Self - Contestant Self - Contestant See fewer	Never Tear Us Apart: The Untold Story of INXS (2014)
Rob Vegas Self - Contestant Self - Contestant See fewer	Sharknado 5: Global Swarming (2017)
Chris Cayzer Self - Contestant Self - Contestant See fewer	Segunda mano (2011)
Danielle Blakey Self - Contestant Self - Contestant See fewer	The Wolverine (2013)
Justin Standley Self - Contestant Self - Contestant See fewer	The X Factor (2005)
Nathaniel Willemse Self - Contestant Self - Contestant See fewer	The X Factor (2005)
Vendulka Wichta Self - Contestant Self - Contestant See fewer	The Voice (2012)
Bella Hunter Self - Contestant Self - Contestant See fewer	RocKwiz (2005)
Angel Tupai Self - Contestant Self - Contestant See fewer	The X Factor (2005)
Morgan Sheather Self - Contestant Self - Contestant See fewer	The X Factor (2005)
Bella Ferraro Self - Contestant Self - Contestant See fewer	The X Factor (2005)
Shiane Hawke Self - Contestant Self - Contestant See fewer	The X Factor (2005)
Jason Owen Self - Contestant Self - Contestant See fewer	The X Factor (2005)
Matt Cenere Self - Contestant Self - Contestant See fewer	The X Factor (2005)
Adil Memon Self - Contestant Self - Contestant See fewer	Mrs. Chatterjee vs. Norway (2023)
Matt Gresham Self - Contestant Self - Contestant See fewer	The Voice (2012)
Carmelo Munzone Self - Contestant Self - Contestant See fewer	The X Factor (2005)
Josh Brookes Self - Contestant Self - Contestant See fewer	I Superbiker 2 - The Showdown (2012)
The Collective Themselves - Contestant Themselves - Contestant See fewer	The X Factor (2005)
Black Ivory Themselves - Contestant Themselves - Contestant See fewer	The X Factor (2005)
Brock Jays Self Self See fewer	The Voice (2012)
Bec Quinn Self Self See fewer	Horizons Crossing (2011)