In "Solo Leveling," the protagonist's past plays a significant role in shaping his present character and abilities. After being known as the weakest hunter, Sung Jin-Woo faces a traumatic event in a dungeon that leads to his awakening as a Player. This pivotal moment from his past drives him to become stronger, more determined, and capable of leveling up consistently. The challenges and experiences he faced in the past push him to surpass his limits and grow into the powerful hunter he is in the present storyline.