Yes, another long ass list. Tell me if I’ve missed any idols, or if it’s incorrect :) Lol, I was the most awkward potato at 15.

Debuted at 12

• Janey - GP Basic

Debuted at 14

• Amet - GP Basic
• BoA
• Changjo Teen Top
• Hayoung - A Pink
• Hyuna - 4Minute
  
• Leah - GP Basic
• Krystal - f(x)
• Melanie - chocolat
• Minhwan - F.T. Island
• Mui - GP Basic
• Sohyun - 4Minute
• Sulli - f(x)
• Sunmi - Wonder Girls
• Tia - chocolat
• Trinity - GP Basic
• Zion - GP Basic

Debuted at 15

• Changmin - TVXQ
• Jane - The Ark
• Jaejin - F.T. Island
• Jiyeon - T-ara
• Jungkook - BTS
• IU
• Minzy - 2NE1
• No Min-woo - Boyfriend
• Seungri - Big Bang
• Soohyun - AKMU
• Suzy - miss A
• Taemin - SHINee
• Zelo - B.A.P

Debuted at 16

• Amber - f(x)
• Chanmi - AOA
• Hyeri - Girl’s Day
• Hyuk - VIXX
• Junghwa - EXID
• Luna - f(x)
• Seohyun - SNSD/Girls’ Generation
  
• Sejong - Lovelyz
• Sungjae - BTOB
• Umji - GFriend
• U-Know Yunho - TVXQ
  
• Yein - Lovelyz
• Yeri - Red Velvet
• Yeeun - CLC
• Yookyung - A Pink
• Yugyeom - GOT7
• Yunsu - JYJ

Debuted at 17

• Bambam - GOT7
• Bomi - A Pink
• Dasom - Sistar
• Daesung - Big Bang
• Eunha - GFriend
• Eunji - A Pink
• Halla - The Ark
  
• Hongki - F.T. Island
• Hyoyeon - SNSD/Girls’ Generation
• Ilhoon - BTOB
• Jaejoong - JYJ
• Joy - Red Velvet
• Jonghun - F.T. Island
• Minah - Girl’s Day
• Naeun - A Pink
• Sehun - EXO
• Seongho - Beat Win
  
• Seolhyun - AOA
• Seunghyun - F.T. Island
• Sooyoung - SNSD/Girls’ Generation
• Yoochun - JYJ
• Yoona - SNSD/Girls’ Generation
• Youngjae - GOT7
• Yuju - GFriend
• Yura - Girl’s Day
• Yuri - SNSD/Girls’ Generation