Fólie se používají ve všech typech literatury. Postava, která vykazuje opačné nebo konfliktní znaky s jinou postavou, se nazývá fólie. Fóliové znaky mohou být antagonisty, ale ne vždy. Někdy fólie budou dokonce i další postavy vedle protagonisty. Když autor používá fólii, chtějí se ujistit, že čtenář získá důležitá atributy a vlastnosti hlavního charakteru. Z tohoto důvodu jsou fólie důležité dbát!
Desperately wants the approval and love of his father
An excellent kite flier and fighter
An excellent kite runner
Desperately wants the approval and love of Amir
Amir's insecurity about his relationship with Baba leads him to be manipulative and slightly mean at times, especially to Hassan. He is also a Pashtun, which sets him above Hassan in their society. He is ashamed of not helping Hassan when he was being attacked by Assef, and he carries this guilt with him for the rest of his life. His guilt leads him to save Hassan's son, Sohrab.
Guilty and repentant
Insecure and jealous
Hassan desperately wants to please Amir, and often takes the blame when they get in trouble because of Amir's ideas. When Amir frames him for stealing, he stays silent about it and leaves the house in grief, but later forgives him. He tells Rahim Khan that he would like Amir to meet his wife and son. He also names his son after his favorite story that Amir would read to him.