Horse Orphnoch is a recurring Orphnoch in Kamen Rider 555, one of the mutated beings who serve as antagonists in the series. Like other Orphnoch, it is a human evolved into a monster after death, and this form is characterized by a horse-like appearance and strong physical power. It appears as part of the wider Orphnoch organization that opposes humans and the Faiz Riders, helping establish the series’ central conflict between humanity and the Orphnoch race.