Storm Owl, known as Storm Fukuroul (ストーム・フクロウル Sutōmu Fukurouru?) in Japan, is a horned owl based Reploid who is a member of the Repliforce, an organization branded as Mavericks because of their yearning for independence. One of the Repliforce's most resourceful generals, Storm Owl is a well-regarded member by the entire staff. He is a very proud soldier and was extremely resentful when he and his associates were branded as Mavericks by the Maverick Hunters. After the Repliforce coup began, he commanded the Air Force in a ploy to divert the attention of the Maverick Hunters.
Storm Owl is especially skilled at night-time operations and is so proud that he will absolutely refuse to follow orders that do not come directly from his superiors. He was good friends with Storm Eagle, so he developed a grudge against X when the Maverick Hunter defeated him. He also does not get along with Chill Penguin at all, due to somebody once confusing him for a penguin as a result of his appearance and short stature.