"'Idol World''' (Hangul: 아이돌 군단의 떴다! 그녀 lit. ''Idol Corps, She Has Arrived!''), also called ''Idol Show'' or ''Idol Army", is a weekly South Korea variety show on MBC hosted by the nation's most popular teen idol groups.

Hosts

Season 1

"'Super Junior-Happy'" Co-hosts - Roo'ra, Click-B#Kim Sang Hyuk (Episode 1 and 5), Gag Concert (Episode 2 onwards)

Season 2

"'FT Island'" Co-hosts - Gag Concert

Season 3

"'2PM'" Co-hosts - Boom (entertainer)

Season 4

"'Kara (band)'" Co-hosts - Boom (entertainer)

Season 5

"'MBLAQ'" Co-hosts - Shin Bong Sun, Jung Joori

Idol Guest Stars

Season 1

First aired: July 10, 2008
Episode 1 - Jewelry (band)
Episode 2 - FT Island & Brown Eyed Girls
Episode 3 & 4 - Wonder Girls
Episode 5 - Kara (group)
Episode 6 - Roo'ra
Episode 7 - Baby Vox Re.V
Episode 8 - 2AM
Episode 9 & 10 - Han Seungyeon, Goo Hara, JYP Entertainment, Moon Ji Eun, Lim So Young
Episode 11 - Kim Na Young, Chun Ja, Han Young
Episode 12 - Kim Na Young, 2AM#Seulong, Lim So Young
Episode 13 & 14 (finale) - Lee Chung Ah

Season 2

First aired: October 16, 2008
Episode 1 & 2 - Younha
Episode 3 & 4 - 2PM, Hwangbo, Baek Boram
Episode 5
Episode 6 & 7(finale) - Kim Na Young, Kim Sang Mi, Min Ji, Choi Eun Joo, Jamilla

Season 3

First aired: December 4, 2008
Episode 1 - none
Episode 2 - Kara (group)
Episode 3 - JunJin Girls and ulzzang nunas
Episode 4 - 2AM, Jang Young Ran, Go Young Wook
Episode 5 - Brown Eyed Girls
Episode 6 - Foreign girls
Episode 7 - none
Episode 8 & 9 - Girls' Generation
Episode 10 - Going to MT
Episode 11 - JunJin Girls and friends
Episode 12 - college girls
Episode 13- Black Pearl, Jung Joori, Lee Chaeyeong, Kim Jungmin, Jin Bora (Star Golden Bell parody Special)
Episode 14 & 15 - SHINee
Episode 16 - After School (band)
Episode 17 (finale)

Season 4

First aired: April 2, 2009
Episode 1 - none
Episode 2 - Daesung
Episode 3 - Lee Chun Hee
Episode 4 - FT Island
Episode 5 (finale) - 2AM

Season 5

First aired: December 16, 2009
Episode 1 - None
Episode 2 - Secret
Episode 3 - T-ara
Episode 4 - Kim Na Young, Kim Sae Rom, Kang Ye Bin
Episode 5 - None (Queen Seon Duk (TV series) Parody/Lee Joon's Secret Camera)
Episode 6 - Soo Jung (Star Golden Bell)
Episode 7 & 8 - After School (band)
Episode 9 & 10 - None (Ski Resort Special)
Episode 11 - IU (singer), Jewelry (band), Jewelry (band), Hong Jin Young
Episode 12 - Transfer Girls
Episode 13 & 14 - Sulli Choi
Episode 15 - None (Health Check-up)
Episode 16 - (finale)

20th Century Fox Television, A New World (Angel episode), American Broadcasting Company, Angel (TV series), Are You Now or Have You Ever Been, Benediction (Angel episode), Billy (Angel episode), Bushwhacked (Firefly), California State University, Long Beach, Couplet (Angel episode)

20th Century Fox Television

A New World (Angel episode)

American Broadcasting Company

Angel (TV series)

Are You Now or Have You Ever Been

Benediction (Angel episode)

Billy (Angel episode)

Bushwhacked (Firefly)

California State University

Long Beach

Couplet (Angel episode)