okay, I'm not familiar in all of Kpop so I'll be highlighting the group names of the ones I'm really familiar with, the unhighlighted ones, I know them but not so much on their personalities but I assure you I know them.

Idol List-

Lover / Rival / Sibling

SHINee; Onew | Jonghyun | Key | Taemin | Minho

B2ST; Doojoon | Hyunseung | Junhyung | Yoseob | Kikwang | Dongwoon

U-KISS; Soohyun | Kiseop | Eli | AJ | Hoon | Kevin | Dongho

Big Bang; G-Dragon | Taeyang | TOP | Seungri | Daesung

Boyfriend; Donghyun | Hyunseong | Jeongmin | Kwangmin | Youngmin | Minwoo

Infinite; Hoya | Sungjong | L | Dongwoo | Woohyun | Sunggyu | Sungyeol

MBLAQ; Seungho | GO | Lee Joon | Thunder | Mir

Teen Top; CAP | Chunji | L.Joe | Niel | Ricky | Changjo

B1A4; Jinyoung | CNU | Sandeul | Baro | Gongchan

Block B; Zico | Taeli | B-Bomb | Ukwon | Jaehyo | Kyung | PO

BAP: Yong Guk | Himchan | Daehyun | Youngjae | Jongup | Zelo

BTOB; Illhoon | Sungjae | Peniel | Minhyuk | Changsub | Hyunshik | Eunkwang

SNSD; Taeyon | Jessica | Sunny | Tiffany | Hyoyeon | Yuri | Sooyoung | Yoona | Seohyun

KARA; Seungyeon | Gyuri | Nicole | Jiyoung | Hara

Wonder Girls; Yoobin | Sunye | Yeun | Sohee | Lim

2ne1; Bom | Dara | CL | Minzy

4minute; Jihyun | Gayoon | Jiyoon | Hyuna | Sohyun

Miss A; Fei | Jia | Min | Suzy

F (x); Krystal | Sulli | Victoria | Luna | Amber

EXO-K: Suho | Kai | Sehun | Baekhyun | D.O. | Chanyeol    

EXO-M: Kris | Lu Han | Tao | Chen | Lay | Xiu Min 

NU'EST; Aron | JR | Baekho | Ren | Minhyun

WOOLLIM GIRLS; Baby Soul | Jiah | Jiae

2PM and 2AM: Junsu | Taecyeon | Nichkhun | Wooyoung | Junho | Chansung | Changmin | Seulong | Jokwon | Jinwoon

T-ARA; Boram | Hwayoung | Qri | Soyeon | Eunjung | Jiyeon | Hyomin

SuJu; Heechul | Sungmin | Kyuhyun | Yesung | Siwon | Kangin | Kibum | Donghae | Eunhyuk | Reowook

Solo Artists; IU | G.NA | BOA | Jay Park | Lee Hyori | Se7en

* I didn't put all Suju members cause I won't like Leeteuk and Shindong on my fic. but I would if you add them as rivals

Positions for-

Leader |  Sub Vocalist | Lead Rapper | Sub Rapper | Main Vocalist | Visual | Main Dancer | Lead Vocalist  | Maknae | Main Rapper | Lead Dancer  |  Sub Dancer