What Year the group debuted: 
~The year they disband is listed after the group name~

1996: H.O.T [2001], Keep Six [1996]

1997: Sechs Kies [2000], Taesaja [idk] , N.R.G [2006]

1998: Shinhwa[-], 1TYM [-], 4men [-]

1999: G.O.D [2005], Click-B [2002], Fly To The Sky [2009]

2000: Ryanghyun ryangha [2011], Moon Chlid [2009]

2001: Kpop[idk], JtL [2003]

2002: Black Beat[2007], Leessang [-], Nell [-]

2003: Brown Eyes Soul [-], Dynamic Dou [-], DBSK (Dong Bang Shin Ki) [-], Buzz [-], Epik High [-]

2004: Trax [-], V.O.S [-], SG Wannable [-]

2005: SS501 [-], Soul Star [-], Paran [2011], Super Junior [-], Monday Kiz [-], Norazo [-]

2006: Big Bang [-], Battle [2010], Xing [2009] 

2007: Code V [-], F.T. Island [-], Supernova [-], T-Max [2011], Tritops [-]

2008: SHINee[-], 2am[-], 2pm [-], A'st1 [2009], Mighty Mouth [-], DNT [-], U-kiss [-], Smash [-], Untouchable [-]

2009: Superme Team [-], Jumper [2011], Mblaq[-], B2ST [-], December [-], SHU-I [-]

2010: CN. Blue [-], TOUCH [-], One Way [-], Dalmatian [-], LED Apple [-], TeenTop [-], Infinite [-], Young Gun [-], F.Cuz [-], ZE:A [-], JYJ [-], The Boss [-], Electro Boyz [-], Homme [-], GD&TOP [-]

2011: G.IAM [-], A-Peace [-], Block B [-], X-5 [-], B1A4 [-], Boyfriend [-], N-Train [-], F.I.X [-], M&D [-], B.o.M [-], HITT [2012], TWI-light [-], BB. Boy [-], N:Sonic [-], M.Peror [-], M.I.B [-], BoyZ [-], MYNAME [-], Double A [-], Phantom [-], Bang & Zelo [-]

2012: B.A.P [-], NU'EST [-], BtoB [-], EXO [-], C-Clown[-], ChAOS [-], SPEED [-], JJ Project [-], Big Star [-], CROSS GENE [-], 4Heven [-], Prizmoliq [-], E-7 [-], 2BiC [-], 7.9.4.2 [-], VIXX [-], NewUs [-], 100% [-], I'MU [-], A-Prince [-], Excite [-], A,cian [-], Dr.K [-], Tasty [-], 24K [-], Attack [-], Y.A.F [-], K-BOYS [-]

-------------------------------------------------------------------------------------------------------------------------

HOT: Woohyuk, Tony, and Jaewon were formed member is JtL in 2001

SHINHWA:Known as a legends of the Korean music industry. Are the first group to create and run their own company and is currently the longest running group in Korea.

1TYM: Teddy is currently one of the main producers in YG 

 RYANGHYUN & RYANGHA: twins

LEESSANG: part of 'The Movement'

DYNIMIC DUO: part of 'The Movement'

EPIK HIGH: part of 'The Movement', Tablo is sign under YG and Mithra and DJ Tukutz are in the stage of signing with YG

SS501: members are pursuring their solo activites

PARAN: member left to pursured individual activites, AJ joined with U-Kiss

FT. ISLAND: Won Bin left due to musical differences and Seunghyun was added 

T-MAX: Originally debut as a 3-member group with Shin Min Chul, Kim Jun, and Park Yun Hwa. In 2010, Park Yun Hwa left for military service and Park Han Bi and Joo Chan Yang were added into the group

TRITOPS: Formerly known as "I The Tri Top's". In 2009, Ilgoon left the group to pursue a solo career but is still listed as an official member despite not participating in activities. In 2012, Woogoon was added

2AM: originally part of "One Day" with 2PM until they formed two separate groups, member Changmin also collaborates with 8Eight's Lee Hyun in the group "Homme"

DNT: in 2009, Chiho left for military duties and was replaced by Dongwook. In 2010, Taegu left for military duties and was replaced by Karin and Min, Min withdrew after a month and was replaced by Jungjo, in 2011, Dongwook and Karin left for military duties and Chiho returned to the group

JUMPER:dbebuted as a duo; Rumors circulated that 3 members would be added to form a 5-member group as of now they have disbanded and member Rokhyun will debut under TOP Media's new boy group 100%

MBLAQ: created by Korean entertainer Rain, Kim Sangbae left before debut due to health issues and was replaced by Thunder

CN. BLUE: started as a rookie indie band in Japan, Kwon Kwangjin left the group in 2009 before they debuted in Korea and Lee Jungshin was added

TOUCH: debuted as a 7-member group. Dabin departed from the group shortly after debut. Minseok and Hanjun left the group in 2011 and Jaewook was added. In 2012, Junyong and Younghoon left the group and were replaced by Chulmin and Kanghyun.

DALMATIAN: Dari enlisted in the military on the April 25, 2011,iIn May 2012, Day Day departed from the group and Simon was added

LED Apple: debuted as a 5-member group, I-OH left the group due to illness, Sunghyun and Minyong left the group after debut promotions and Kyumin, Jaehoon, and Hyosuk were added in November 2011, Jaehoon left the group and KeonU and Hanbyul were adde, KeonU left the group in July 2012 due to health issues

TEENTOP: created my Andy of SHINHWA

INFINITE: produced by Epik High's Tablo and Mithra Jin, Known for their impeccable sychronization when dancing

F.CUZ: Originally a 4-member groupm main vocalist LeeU withdrew from the group in May 2011, in December 2011, Raehyun and Daegun were added, their name is pronounced "Focus"

THE BOSS: Former member if Xing

BLOCK B: Zico is a former SM trainee and was originally supposed to debut with SHINee, Jaehyo trained with B2ST and B-Bomb trained with INFINITE, they have written over 120 songs by themselves before their debut

X-5: Ghun and Haewon are former members of trot group, 3 Chongsa, Zin and Sulhu are former members of XING

N-TRAIN: eader Jungkyun was former member of group, TACHYON, disbanded in 2008, Rapper Seunghyun was former member of group name Monster, debuted in 2007, Other 3 members were backup dancers for female group, VNT

F.I.X: ember Oh Song released a solo single and was a previous member of Sponge Band; member Jungwook was a former member of Vanhaja, and is also the cousin of Super Junior member Ryeowook

N:SONIC: J.Heart was an SM trainee and Eunho was a JYP trainee

MYNAME: Created by Fly To The Sky member Hwanhee, Seyong was a former JPY trainee, while Insoo was a former Sperstar K2 contestant, Seyong & Insoo were also Hwanhee's backup dancers

VIXX: All the members were finalists on Mnet's reality program, "Mydol". The members were chosen through viewer votes

A-PRINCE: Debuted under the name TAKEN in 2011, the group originally debuted under the company Again45 Entertainment, but changed to NEW PLANET Entertainment in the spring of 2012, in 2012, Yoojoon, Gunwoo, and Seungyeol left the group and Seungjin and Siyoon were added

-------------------------------------------------------------------------------------------------------------------------

was bored and decided to do something i would never do again :) lol took me forever to do this. 

oh and i don't who to credit this to, found all the info online.