Skarl3t are made up of Tonia, Naomi and Natasha and one of seven groups singing for three spots in Louis Walsh's final three.
Enjoying the sun in Ibiza, the girls say: "I feel like Skarl3t has a group has a lot of edge. I feel that's one thing that sets us apart from all the other groups.
"When we go somewhere we like to leave our mark."
Ahead of their performance in front of Louis and his guest judges Fleur East and Alesha Dixon, the girls conclude: "We need to really deliver now.
"This isn't fun and games anymore, this is real life, you either make it or you don't, there's no room for failure."
Skarl3t sing OutKast's Hey Ya! - apparently one of Louis' favourite songs, who knew? - as they bid for a spot in the live shows.
Once the girls leave, Louis reacts: "I like their attitude, I like they're look, they're good."
But will he pick them as one of his final three?
Skarl3t are competing against 5AM, Four of Diamonds, The Brooks, Ottavio and Bradley, Tom and Laura and wild card Yes Lad for the places in the live shows.
Find out who gets through at the judges' houses tonight.
The X Factor continues on ITV Saturday 1st October at 8pm and Sunday 2nd October at 7.30pm.