London, Oct 9: Singer Robbie Williams will reportedly appear as a guest judge on reality show "The X Factor" to give unbiased opinions.
The singer is expected to come on the show to be aired Nov 4, and will also sing his new single "Candy".
"The idea is to get the famous acts more involved in the show and the decision making," dailystar.co.uk quoted a source as saying.
"They would be there to give their opinion as unbiased judges without having a vested interest in any of the acts," the source added.
Other stars expected to make a appearances on the show are Bruno Mars, Pink and Gwen Stefani.
