In the webtoon "Solo Leveling," the protagonist's family plays a crucial role in shaping his character and driving the plot forward. While initially depicted as weak and in need of protection, the protagonist's family serves as a source of motivation and inspiration for him to become stronger and protect those he cares about. The tragic events surrounding his family also serve as a driving force for the protagonist to grow and seek revenge against those responsible. Ultimately, the protagonist's family acts as a catalyst for his transformation into a powerful and determined hunter.