SIXTEEN was a reality survival show created by JYP Entertainment and Mnet. It determined JYP's future girl group TWICE, and it put sixteen JYP trainees against one another.
- - Tzuyu was added due to viewer's opinions and Momo from J.Y. Park's opinion.
- Nayeon, Jeongyeon, Sana, Jihyo, Mina, Dahyun, and Chaeyoung won TOP 7, making them a part of TWICE. Then Tzuyu won Audience Pick, and Momo won JYP choice, thus adding them to the group. They debuted on October 20, 2015 with the mini-album The Story Begins.
- Somi later joined Produce 101, and won 1st place, making her a part of I.O.I until their disbandment. In February, 2017, Somi joined the second season of the show Sister's Slam Dunk and became a member of the group Unnies until the show ended. Later, she became a member of the project group Girls Next Door, during the show Idol Drama Operation Team. In August, 2018, Somi left JYP Entertainment and joined The Black Label, a sub-label of YG Entertainment, a month later. And finally, on June, 2019, she made her solo debut with the digital single, "Birthday".
- Jiwon and Minyoung left the agency to pursue their dreams elsewhere.
- Theme song "I'm Gonna Be a Star" was re-recorded by TWICE and included on the physical version of their second mini-album Page Two.
- Jiwon, along with Natty and Eunsuh, joined Idol School in July 2017.
- Only Jiwon made it to the final line up, debuting as a member of the girl group fromis_9 on January 24, 2018 with the mini album To. Heart.
- Chaeyeon later joined Produce 48 and came in 12th, making her a member of IZ*ONE until their disbandment. The group debuted on October 29, 2018 with mini album Color*IZ.
- In January, 2019, Chaeryeong was announced as a member of the newest JYPE's girl group, ITZY, which debuted in February 12, 2019 with the digital single "IT'z Different".