Gibby Gibson, Mrs. Charolette Gibson, Mr. Gibson, Sabrina Gibson
Guppy Gibson (Ethan Munck) is Gibby's little brother. He appears in "iPsycho," coming over to Carly's house to stay with his brother, who is staying at "Camp Spencer." Guppy later frees the iCarly gang from the recording booth while Gibby distracts Nora (the girl who trapped the iCarly gang.) Guppy is played by Noah Munck's real-life brother, Ethan. Like Gibby, Guppy likes taking his shirt off, but unlike Gibby, he rarely talks and is mostly shown speaking into Gibby's ears. In addition to iPsycho, Guppy appears in "iSell Penny Tees" when he was on the iCarly webcast, "iDo" when he was riding in his flame little car that is attached to Gibby's bike, and in "iStart A Fan War" in which he, Gibby, and their grandfather are driving to Webicon. His signature phrase is (towards Gibby), "Happy birthday!"; when Carly, Kayla, Sam, and Freddie are trapped in Nora's basement in "iPsycho", they make a code and send it to Gibby, in which "every fourth word" is a code phrase.