Iron Will was a male minotaur who appears in Putting Your Hoof Down. He is a muscular, bipedal, therianthropic ox-like character who claims that he teaches "assertiveness techniques" to "pushovers." He works as a self-help instructor for ponies who show low self-esteem, often offering them advice via catchy phrases.
In Greek mythology, the Minotaur was a therianthropic (humanoid) monster with the head of a bull and the body of a man. The word Minotaur derives from the Greek words minos, meaning king, and tauros, meaning bull, giving it the literal translation as either "king bull" or the "kings' bull."