• 
  Drazen Kuhn

  Professor Menzura
• 
  Alen Liveric

  Mlinaric
• 
  Milan Plestina

  Doorkeeper
• 
  Rakan Rushaidat

  Inspector Krivic
• 
  Krunoslav Saric

  History teacher
• 
  Dijana Vidusin

  Koko's mother
• 
  Lana Baric

  Professor
• 
  Ozren Grabaric

  Koko's father

• 
  Nina Mileta

  Marica
• 
  Antonio Parac

  Koko
• 
  Kristian Bonacic

  Zlatko
• 
  Toma Budanko

  Mirko
• 
  Filip Ruzic

  Marko
• 
  Karlo Maloca

  Tomo
• 
  Vanja Markovinovic

  Marijana