Cowell Digs Katy Perry's 'Feisty' Side

Simon Cowell likes the 'feisty' Katy Perry

The fourth seat at the "American Idol" auditions judge's table has welcomed some of the hottest stars this summer. Simon Cowell tells "Extra" he especially enjoyed working with "feisty" pop rocker Katy Perry.

Cowell reluctantly revealed the "Waking Up in Vegas" songstress wasn't afraid to stand up to him during the judging process. "She's a feisty little thing," he dished. Adding, "She's quirky. Definitely got her own opinion."

Simon explained, "Solo artists are not used to people disagreeing with them. They are feisty and I like that."

Cowell is the headstrong and honest judge on the panel, but he says he still won Perry over. "I don't think she knew quite how right I was until she sat next to me," he confidently declared.

'American Idol' Guest Judges

Posh Judge

Victoria Beckham joined the judges during the Denver and Boston auditions.

No More Drama

Mary J. Blige served as a judge for the Atlanta auditions.

How I Met Your 'Idol'

Neil Patrick Harris judged the Dallas auditions.

Country Crooner

Shania Twain judgedin Chicago.

'Daisy' Judge

Kristin Chenoweth joined the panel for the Orlando auditions.

'Burnin' Up' for 'Idol'

Joe Jonas judged the Dallas auditions.

'Complicated' Judging Panel

Avril Lavigne will join the judges in Los Angeles.

'Waking Up' in L.A.

Katy Perry will decide what she likes at the Los Angeles auditions.