Autumn Army - Ippon-Datara

"This shy monster is rarely encountered by humans, and all that is usually seen of it is a single line of huge footprints about a foot across, winding through the snowy mountains of Wakayama prefecture. Nonetheless the ippon-datara is thought to be a large human-like beast with one leg and one eye. It is also rumored to be an expert blacksmith, or perhaps the ghost of one. " (c) Obakemono project - [link]

There's really a number of ways that people portray this yokai, from distinctly human to something more monstrish.