The ICarly casts are: Carly, Freddie, Sam, Spencer and Gibby. (Those are the Main Characters)
iCarly
No because it is trademark But you can write a show similar to it without using iCarly or the names of the characters
The iCarly cast is Nathan Kress, Miranda Cosgrove, Jerry Trainor, Noah Munck and Jennette McCurdy.
iCarly
Nathan Kress
You contact them by their fan sight.
Probably Dan Schneider
No, Connie Talbot isn't part of the Icarly cast. Connie is a child recording artist who found fame on the show Britains Got Talent.
iPsycho and iParty With VICTORiOUS... so far
Nathan kress
No because ICarly is a tv show and they already have a set of cast members for every episode. There actually is not a webshow called ICarly as it is all part of the tv show.
imma 12 years old