All The ‘American Idol' Judges In The Show's History From Simon Cowell to Katy Perry 

American Idol, a singing competition, has been revived by ABC in 2018, with judges Simon Cowell, Randy Jackson, and Paula Abdul. Cowell, known for his harsh critiques, has served on Pop Idol and The X Factor UK. Jackson, the longest-serving judge, has been known for his critiques of contestants. Ellen DeGeneres, Jennifer Lopez, Mariah Carey, and Katy Perry have all been part of the show's history. The show has launched the careers of artists like Kelly Clarkson, Carrie Underwood, and Jennifer Hudson.