This list of mythical creatures that begin with this letter and I am constantly gathering information from each continent, and is continually being updated.
Monopod (Medieval bestiaries)
Monopods (also called sciapods, skiapods, skiapodes) were mythological dwarf-like creatures with a single, large foot extending from a leg centred in the middle of their bodies. The names monopod and skiapod are both Greek, respectively meaning "one-foot" and "shadow-foot".
They are described by Pliny the Elder in his Natural History, where he reports travelers' stories from encounters or sightings of Monopods in India. Pliny remarks that they are first mentioned by Ctesias in his book Indika (India), a record of the view of Persians of India which only remains in fragments.