I only know a few of them...
ChAOS = disbanded in 2013
B.A.P = disbanded in 2019, Zelo and Bang Yongguk left in 2018
NU'EST = disbanded in 2022
BTOB = Ilhoon left in 2020
EXO-K = After 3 of EXO-M's members left the group, they never released songs under the name EXO-K anymore. Practically, they disbanded.
EXO-M = Realistically speaking, the group was no longer manageable since 3 of the members left
EXO = Since 3 of EXO's Chinese members left, the group continued promoting with 9 members as one group
JJ Project = Re-debuted in 2014 and naturally became GOT7's sub-unit
VIXX = Hongbin left in 2020
A-JAX = disbanded in 2019
CROSS GENE = All the members left the group except for Shin. Their name has been deleted from the company's website
BOB4
BIGSTAR = disbanded in 2019
C-CLOWN = disbanded in 2015
A-PRINCE
TimeZ = Practically disbanded since they haven't promoting and updated fans for 2 years
Tasty = Announced they halted all of Korean activities through their official Weibo account in 2015
NewUs
E7
24K
100% = disbanded in 2021
OFFROAD = Practically disbanded since the members re-debuted in AA and BNF
A.CIAN
LUNAFLY
MR.MR
Wonder Boyz
EXCITE
PURE
-Huk... That's a lot...
-Yeah... Because there are over 100 groups debuted in 2012
-I almost know none of them...ㅋㅋㅋ
-A lot of groups debuted in 2012. The groups who still survive until this second are really amazing.
-Tasty used to be really popular back then, though...
-2012 was indeed legendary...
-The only groups who still survive are BTOB and EXO...
-Whoa... I used to like C-CLOWNㅜㅜ
-Tasty... It's been so long since the last time I heard their name...ㅎㅎㅎ
-I only know 8 groups... It's been so long since the last time I heard C-CLOWN and 100%ㅋㅋㅋㅋ
-I know some of these groups since their promotions overlapped with my bias' promotion at that time...
-I used to like 100% for a short period of time back then...
-I only know 11 of them...
