Series Cast 20

1. 

   IU

   IU / Eun / Hanna / Ji-eu (4 Episodes)

2. 

   Sulli

   Self (archive footage) (1 Episode), Nezzy (1 Episode)

3. 

   Bae Doona

   Doo-na (1 Episode)

4. 

   Park Hae-soo

   Jung-woo (1 Episode)

5. 

   Shim Dal-gi

   Hye-bok (1 Episode)

6. 

   Jung Joon-won

   K (1 Episode)

7. 

   Kim Tae-hun

   Father (1 Episode)

8. 

   Lee Sung-wook

   Jung-geun (1 Episode)

9. 

   Pierce Conran

   IU's boyfriend (1 Episode)

10. 

    Lim Sun-woo

    — (1 Episode)

11. 

    Hwang Mi-young

    Nezzy's Mother (1 Episode)

12. 

    Park Ga-bi

    Young Nezzy (1 Episode)

13. 

    Victoria Song

    Self (archive footage) (1 Episode)

14. 

    Amber Liu

    Self (archive footage) (1 Episode)

15. 

    Luna

    Self (archive footage) (1 Episode)

16. 

    Krystal Jung

    Self (archive footage) (1 Episode)

17. 

    Shin Dong-yup

    Self (archive footage) (1 Episode)

18. 

    Kim Sook

    Self (archive footage) (1 Episode)

19. 

    Kim Jong-min

    Self (archive footage) (1 Episode)

20. 

    Park Ye-eun

    Self (archive footage) (1 Episode)

Series Crew 41