Simba undergoes a significant transformation throughout the story, evolving from an adventurous, naive cub into a confident, responsible king. Initially, he's a playful and impressionable young lion cub, highly admiring his father, Mufasa, and dreaming of becoming a great ruler. As a young adult, he experiences a period of insecurity and doubt after witnessing Mufasa's death and feeling responsible for it. However, Simba eventually overcomes these challenges, demonstrating courage, accountability, and the willingness to sacrifice for the greater good, ultimately fulfilling his destiny as king