In literature, what does a foil character typically do?

A foil character is important in literature because they offer a contrasting perspective that highlights specific qualities, traits, or motivations of the main character. By being different in significant ways, foil characters can enhance the understanding of the protagonist, illustrating their unique attributes through comparison. For instance, if the main character is bold and adventurous, a foil may be more cautious and introspective, thereby emphasizing the main character's bravery and determination.

While reflecting the main character's qualities can occur as a consequence of the contrast, the primary role of a foil is to provide that contrast itself, which is crucial for character development and thematic exploration. A foil does not distract from the main plot; rather, they serve to enrich it by enabling readers to grasp the complexities of the main character more deeply. Additionally, a foil typically does not serve as a secondary protagonist or lead character; instead, their role is more supportive in nature.