Daigo Madoka is the main protagonist of the series 'Ultraman Tiga.' As a member of the Global Unlimited Task Squad (GUTS), Daigo is chosen to merge with the ancient giant of light, becoming Ultraman Tiga. Throughout the series, he courageously defends Earth from various monster and alien threats, often placing himself in great danger for the sake of humanity. Daigo's journey is marked by personal growth, heroism, and his unwavering sense of justice and compassion.