Obanai Iguro is a demon slayer in the anime and manga series 'Demon Slayer'. He is a member of the Pillars, an elite group of demon hunters who are dedicated to protecting humanity from the demons that threaten to destroy them. Iguro is known for his distinguished appearance, with his silver hair and skintight snake bodysuit. He is also a powerful demon hunter with supernatural abilities, such as his ability to manipulate snakes.
Iguro's importance in the series lies in his role as a member of the Pillars and his fight against demons. As a complex character, it is revealed that he has a dark and tragic personal history and motives that drive him to fight demons. His character is also noted for his loyalty to the cause and his determination, which makes him an important character in the development of the plot and the fight against demons.