Harpuia is one of the Four Guardians in the Rockman Zero (Mega Man Zero) series, serving as a high-ranking officer under Neo Arcadia. Known for his keen sense of justice and mastery of wind-based attacks, Harpuia is a formidable adversary and a recurring rival to the protagonist, Zero. Although initially antagonistic, he gradually questions Neo Arcadia’s methods and develops a sense of honor, making him a complex character with significant influence on the storyline.