On April 3, 2018, their agency announced the group's name change to TST.
On June 11, 2018, Kyeongha left the group.
|Ain (아인)||Leader, Vocalist, Main Dancer||2017–present|
|Yonghyeon (용현)||Main Vocalist, Maknae||2017–present|
|K (케이)||Lead Vocalist||2017–present|
|Wooyoung (우영)||Lead Dancer, Vocalist, Rapper||2017–present|
|Kyeongha (경하)||Rapper, Maknae||2017–2018|
- K, Yohan, and Ain are former members of NOM.
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