What impact do supporting characters have on the protagonist's journey?

Supporting characters significantly influence the protagonist's journey by serving as catalysts for growth and learning. These characters often provide essential insights, challenges, or different perspectives that help the protagonist evolve throughout the narrative. Their interactions with the main character can inspire new ideas, challenge existing beliefs, or introduce conflict that necessitates personal development.

For instance, a mentor figure might guide the protagonist by sharing wisdom that helps them navigate their challenges, while a friend could offer support and encouragement that motivates the protagonist to overcome obstacles. Additionally, an antagonist can push the protagonist to confront their fears or shortcomings, ultimately leading to self-discovery and character growth. In essence, the presence and actions of supporting characters enrich the protagonist's experience and contribute to a more dynamic and transformative journey.