Randy Jackson

Randall Darius Jackson is an American musician, record producer, music manager, and TV personality. He is best known as a judge on American Idol.

Jackson never made an appearance on the show in person, but in the episode, iSpy a Mean Teacher, he appeared while Carly and Freddie were in Ms. Briggs's closet, and they saw many pictures of him on all her items.

Ms. Briggs appears to be a really big Randy Jackson fan. Freddie and Carly seem to like him as Freddie took some Randy Jackson cologne from Ms. Briggs' closet (and he said it was "Tight, dawg!") and Carly said (about Ms. Briggs), "If you're going to be obsessed with an American Idol judge, you might as well pick one that's firm, but fair."

Credits to

 * iCarly Wiki on Fandom