"Parent Line" consists of the members who serve as leaders for the members of IZ*ONE.
Eunbi said during an interview at Naver Now Radio:
|“||Gosh, it's a difficult question but if I am to make someone the leader, I'll hand it over to Chaeyeon. Chaeyeon... first of all... takes good care of everyone and is very meticulous. She exudes a mother-like feel. Sakura exudes a father-like feel as the second oldest while Chaeyeon feels like a mom.||”|
|Name||Birth Date||Position||Final Rank||Label||Color|
|Kwon Eun Bi||September 27, 1995||Leader, Main Dancer, Lead Vocalist||7||Woollim Entertainment||Purple|
|Miyawaki Sakura||March 19th, 1998||Vocalist, Visual||2||HKT48||Pastel Pink|
|Lee Chae Yeon||January 11th, 2000||Main Dancer, Lead Vocalist, Lead Rapper||12||WM Entertainment||Blue Mint|