All 11 remaining contestants will be able to perform tracks from their musical idols and inspirations.
Last year's Heroes week included a cover of 'Feeling Good' from Rebecca Ferguson, Matt Cardle's version of 'Just The Way You Are' and Cher Lloyd's take on 'Hard Knock Life'.
Johnny Robinson has promised that he will perform a ballad this weekend, while Kitty Brucknell's stage production is rumoured to involve snakes.
Meanwhile, Frankie Cocozza has promised to do a more up-tempo and "big" number after falling into the bottom two with his cover of Coldplay's 'The Scientist'.
This week's special guest performers on the results show are American Idol star Kelly Clarkson, Bruno Mars and UK hip-hop star Professor Green.
The X Factor continues on Saturday at 8pm on ITV1.
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