Carrie Ann Inaba Carrie Underwood Craig Revel Horwood Bruno Tonioli Derek Hough Paula Abdul Len Goodman Guest Judges Paul Hollywood Katy Perry Comments and Feedback Judging Criteria Melissa Peterman Snoop Dogg Reba McEntire Dancing With the Stars Judges Anna Delvey Mel B Christian Polanc Tom Kaulitz Shirley Ballas Simon Cowell Nigel Lythgoe Blind Auditions Maksim Chmerkovskiy Mentoring and Judging Panelists SYTYCD Rhys Nicholson The Masked Singer Drag Royalty Coaches Padma Lakshmi Feedback Prue Leith Panel American Idol Judges Celebrity Detectives Keke Palmer Heidi Klum Judging Panel Judge Mathis