Miranda Taylor Cosgrove (born May 14, 1993) is an American actress, singer and songwriter. Her career began at the age of 3 with several television commercial appearances. Cosgrove's film debut came in 2003, when she appeared as Summer Hathaway in School of Rock. She appeared in a number of minor television roles over several years before coming to prominence as Megan Parker on the Nickelodeon television series Drake & Josh. In 2007, she landed the role of Carly Shay, the lead character on the Nickelodeon teen sitcom iCarly, on which she starred until 2012. As of May 2010, Cosgrove earned $180,000 per episode of iCarly, making her the second-highest-paid child star on television, and in 2012 was listed in the Guinness World Records as the highest paid child actress. Cosgrove also voiced Margo in the animated film Despicable Me (2010) and its 2013 sequel. That year, Cosgrove was cast in an NBC television pilot titled Girlfriend in a Coma, which didn't materialize after Christina Ricci left the production. In 2016, she starred on the short-lived NBC sitcom Crowded. Description above from the Wikipedia article Miranda Cosgrove, licensed under CC-BY-SA, full list of contributors on Wikipedia.

Miranda Cosgrove plays as Carly Shay in iCarly.
Miranda Cosgrove is the top #1 member of the cast and appears in 23 episodes.

Jerry Trainor (born January 21, 1977) is an American actor, comedian and voice actor, widely known for appearing on iCarly. He is also known for Drake & Josh and T.U.F.F. Puppy. Trainor also appears on Hungry Girl TV.

Jerry Trainor plays as Spencer Shay in iCarly.
Jerry Trainor is the top #2 member of the cast and appears in 23 episodes.

Nathan Kress (born November 18, 1992) is an American actor, director, and former child model. He is known around the world for his lead role on Nickelodeon's hit show "iCarly", Nathan plays Freddie Benson, Carly's smitten next-door neighbor and technical producer of her web show. Now that iCarly has ended its stellar run, Nathan is breaking out into feature films, as a lead in "Into the Storm", a Steve Quale tornado thriller for New Line Cinema, due to be released in August 2014. Born in Glendale, California, Nathan began acting at the age of three and quickly landed a feature film role as the voice of Easy the Chimp in "Babe: Pig in the City". By fifth grade, he had landed a recurring role as a sketch performer on "The Jimmy Kimmel Show" playing various characters; one of his favorite being a young Simon Cowell of "American Idol". Shortly thereafter, Nathan began to book guest-starring roles on such shows as "Without a Trace", "Standoff", "The Suite Life of Zack and Cody", "House MD", and "Notes from the Underbelly". However, it was his guest role on Nickelodeon's top-rated show "Drake and Josh" that led the show's creator, Dan Schneider, to cast him in "iCarly". Since then, Nathan has starred alongside Christopher Meloni in Nickelodeon's "Gym Teacher: The Movie" and has guest-starred on "True Jackson, VP" and "CSI: Crime Scene Investigation".

Nathan Kress plays as Freddie Benson in iCarly.
Nathan Kress is the top #3 member of the cast and appears in 23 episodes.

Jaidyn Triplett plays as Millicent Mitchell in iCarly.
Jaidyn Triplett is the top #4 member of the cast and appears in 23 episodes.

Laci Mosley plays as Various Characters in iCarly.
Laci Mosley is the top #5 member of the cast and appears in 6 episodes.