On Air

Assistant Director

• 
  Choi Ji Yeong

Director

• 
  Shin Woo Cheol

Screenwriter

• 
  Kim Eun Sook

Main Role

• 
  Song Yoon Ah

  Seo Young Eun

  Main Role
• 
  Kim Ha Neul

  Oh Seung Ah

  Main Role
• 
  Lee Bum Soo

  Jang Ki Joon

  Main Role
• 
  Park Yong Ha

  Lee Kyung Min

  Main Role

Support Role

• 
  Kim Sung Oh

  Kim Seong O [SW manager]

  Support Role
• 
  Yoo Seo Jin

  Yun Hyeon Su

  Support Role
• 
  Lee Chul Min

  Kim Hak Seon

  Support Role
• 
  Ricky Kim

  Aidan Lee [Seung A's friend]

  Support Role
• 
  Lee Sung Min

  Song Su Cheol [SBC drama director]

  Support Role
• 
  Yeo Ho Min

  Hong Seong Hwa

  Support Role
• 
  Shin Dong Woo

  Kim Jun Hui

  Support Role
• 
  Choi Sang Hoon

  Kang Ho Sang

  Support Role
• 
  Sul Ji Yoon

  Writer Kwon

  Support Role
• 
  Hong Ji Min

  Ms. Lee [Yeong Eun's older sister]

  Support Role
• 
  Lee Hyung Chul

  Jin Sang U [SW Entertainment president]

  Support Role
• 
  Park Joo Ah

  Park Hyang Ja

  Support Role
• 
  Jang Hyo Jin

  Chu Jun U

  Support Role
• 
  Yook Hye Seung

  Che Ri

  Support Role
• 
  Min Seo Hyun

  Yang So Eun

  Support Role
• 
  Jung Chun Seok

  Lee Won [Jang Enter wannabe actor]

  Support Role
• 
  Choi Shang

  Alex

  Support Role
• 
  Lee Dal Hyung

  Park Bong Sik

  Support Role
• 
  Lee Won

  Kwon O Seok

  Support Role
• 
  Lee Geum Ju

  [Eun Seok's mother]

  Support Role
• 
  Ji Il Joo

  [Hyo Ri's manager]

  Support Role
• 
  Kim Ki Soo

  [Yeong Eun's tango teacher]

  Support Role
• 
  Lee Soo Wan

  [Photographer]

  Support Role
• 
  Kang Samuel

  [Armed airline]

  Support Role
• 
  Ha Eun Seol Support Role

Guest Role

• 
  Lee Hyo Ri

  [Herself] (Ep.1)

  Guest Role
• 
  Park Shi Yeon

  [Herself] (Ep. 1)

  Guest Role
• 
  Han Chae Young

  [Herself] (Ep. 1)

  Guest Role
• 
  Lee Jae Jin

  [Himself] (Ep. 1)

  Guest Role
• 
  Choi Min Hwan

  [Himself] (Ep. 1)

  Guest Role
• 
  Kim Ah Joong

  [Award ceremony red carpet] (Ep. 1)

  Guest Role
• 
  Lee Hong Gi

  [Award ceremony red carpet] (Ep. 1)

  Guest Role
• 
  Lee Sun Kyun

  [Award ceremony red carpet] (Ep. 1)

  Guest Role
• 
  Oh Man Seok

  [Award ceremony red carpet] (Ep. 1)

  Guest Role
• 
  Park Jin Hee

  [Award ceremony] (Ep. 1)

  Guest Role
• 
  Daniel Henney

  [Himself / Award ceremony red carpet] (Ep. 1)

  Guest Role
• 
  Kim Se In

  [New actress visiting broadcasting station] (Ep. 2)

  Guest Role
• 
  Lee Chun Hee

  [Himself] (Ep. 3)

  Guest Role
• 
  Jeon Hye Bin

  [Hye Bin in Yeong Eun's drama] (Ep. 3)

  Guest Role
• 
  Kim Min Joon

  [Himself] (Ep. 4)

  Guest Role
• 
  Uhm Ji Won

  [Herself] (Ep. 5)

  Guest Role
• 
  Jung Jong Yul

  [Ji Won's manager] (Ep. 5)

  Guest Role
• 
  Kang Hye Jung

  [Herself] (Ep. 5, 12)

  Guest Role
• 
  Lee Seo Jin

  [Himself] (Ep. 9)

  Guest Role
• 
  Song Chang Eui

  [Himself] (Ep. 11)

  Guest Role
• 
  Shin Dong Wook

  [Drama actor] (Ep. 14)

  Guest Role
• 
  Kim Je Dong

  [Press conference moderator] (Ep. 15)

  Guest Role
• 
  Kim Jung Eun

  [Herself] (Ep. 16)

  Guest Role
• 
  Yoon Se Ah

  [Drama's writer] (Ep. 21)

  Guest Role
• 
  Seo Jin Wook

  Kim Dae Sik

  Guest Role
• 
  Jeon Do Yeon

  [Herself]

  Guest Role
• 
  Kim Tae Young

  [Doctor]

  Guest Role
• 
  Choi Young Do

  [Casting]

  Guest Role
• 
  Kim Sung Min

  [Manager]

  Guest Role
• 
  Lee Seung Hyung

  [Advertiser]

  Guest Role
• 
  Jung Jong Hyun

  [Seung A's fan]

  Guest Role
• 
  Son Seon Geun

  [S Media CEO]

  Guest Role
• 
  Jung Chan Woo

  [Fortune teller]

  Guest Role
• 
  Lee Jung Sung

  [Lawyer]

  Guest Role
• 
  Cha Woong Ki

  [8-year-old boy]

  Guest Role
• 
  Yoon Seol Hee

  [Room salon girl]

  Guest Role
• 
  Kim Do Yeon

  [Che Ri's coordinator]

  Guest Role
• 
  Yoo Hae Jung

  [Child at the playground]

  Guest Role
• 
  Oh Jung Won

  [Seung A's hairdresser]

  Guest Role
• 
  Lee Chae Won

  [Seung A's coordinator]

  Guest Role
• 
  Min Dae Shik

  [Entertainment reporter]

  Guest Role
• 
  Jung Myung Joon

  [Wants to sign a contract with Seung A]

  Guest Role
• 
  Sung In Ja

  [Dislikes Yeong Eun's drama]

  Guest Role
• 
  Shin Jong Hoon

  [Man who handed Aiden's profile picture to the standard]

  Guest Role
• 
  Yang Eun Yong

  [Journalist at the exhibition]

  Guest Role
• 
  Min Byung Ae

  [Woman who wants a ticket to go to the moon]

  Guest Role
• 
  Son Jin Ho Guest Role
• 
  Kim Min Jwa Guest Role
• 
  Song Seung Yong Guest Role

Unknown

• 
  Lee Sang Eun Unknown