Dancing with The Stars may be the most seasoned and experienced of professional dancers, but that doesn't make the judges they face any less intimidating!MORE: Lara Spencer keeps her promise and flies to LA to support Sam Champion on DWTSAt least that's what Val Chmerkovskiy thinks, who recently revealed who of the judges is the toughest to please, despite his impressive skills.The star has been on the dance competition show for over ten years, since 2011, and as its latest season progresses, he is having to impress not only fans, but also Derek Hough, Carrie Ann Inaba, Bruno Tonioli and Len Goodman.WATCH: Christie Brinkley breaks her arm during DWTS rehearsalsMORE: Dancing With the Stars: Inside Emma Slater's split from co-star Sasha FarberSpeaking to Us Weekly, he revealed just who is the most intimidating out of the four, and what they are really like behind-the-scenes."We have such a different relationship with the judges than I think people think we do," he admitted.Plus, though he acknowledged that most would find Len the most intimidating judge to face, he says for him not so much. He explained: "Obviously, the answer [for others] is Len because Len is, you know, he's kind of no-nonsense.