Level Up

Director

• 
  Kim Sang Woo

Screenwriter

• 
  Kim Dong Kyu

Main Role

• 
  Sung Hoon

  Ahn Dan Te

  Main Role
• 
  Han Bo Reum

  Shin Yun Hwa

  Main Role

Support Role

• 
  Cha Sun Woo

  Kwak Han Chul

  Support Role
• 
  Kang Byul

  Bae Ya Chae

  Support Role
• 
  Danny Ahn

  Park Gil Woo

  Support Role
• 
  Ryu Seung Soo

  Jo Tae Goo

  Support Role
• 
  Lee Byung Joon

  [Yun Hwa's father]

  Support Role
• 
  Shin Jung Yoon

  Song Joo Im

  Support Role
• 
  Jung Soo Kyo

  Kang Sung Goo

  Support Role
• 
  Son Sang Yeon

  Kim Hoon

  Support Role
• 
  Lee Ga Won

  Oh Mi Ja

  Support Role
• 
  Son Jin Hwan

  [Dan Te's father]

  Support Role
• 
  Kim Ji In

  Kim Sang Mi

  Support Role
• 
  Seo Ji Young

  [Han Chul's mother]

  Support Role
• 
  Lee Song Yi Support Role
• 
  Jin Woo Jin

  Secretary Jung [Executive director Kang's assistant]

  Support Role
• 
  Park Han Deul

  [Joybuster Team Member]

  Support Role
• 
  Hong Ye Ji

  [Secretary]

  Support Role
• 
  Kim Ji Eun

  Park Gyeong Ae

  Support Role

Guest Role

• 
  Hwang Je Sung

  Joseph Lee

  Guest Role
• 
  Eom Seo Hyun

  Shin Yun Hwa [Young]

  Guest Role
• 
  Sun Han Gook

  Sun Han Gook

  Guest Role
• 
  Jin Cho Rok

  [Designer team leader]

  Guest Role
• 
  Kian84

  [Nutty One & Crazy One manager}

  Guest Role
• 
  Henry Lau

  [Nutty One & Crazy One manager]

  Guest Role
• 
  Lee Ho Chul Guest Role
• 
  Kim Ye Jin

  Park Soo Yeon [Interviewee]

  Guest Role
• 
  Choi Hyung Joo

  An Dan Te (Young)

  Guest Role
• 
  Yoo Young Bin

  [Direct transaction man]

  Guest Role
• 
  So Yun Ho

  [Game Publisher]

  Guest Role
• 
  Kim Seung Hyun

  [Gangster]

  Guest Role
• 
  Sung Min Jun

  Yeon Woo (Young)

  Guest Role
• 
  Seo Dong Oh

  [Interview man]

  Guest Role
• 
  E.So

  (Ep. 9)

  Guest Role
• 
  Shin Ji Won

  (Ep. 9)

  Guest Role
• 
  ISHA

  (Ep. 9)

  Guest Role
• 
  Se Hyung

  (Ep. 9)

  Guest Role
• 
  Yoo Tae Ha

  (Ep. 9)

  Guest Role
• 
  Han Sang Chul

  [Drunk man]

  Guest Role
• 
  Jung Jae Oh

  [New employee]

  Guest Role

Unknown

• 
  Son Hwa Young Unknown