"Mii" is the sacred word for the Mii tribe from Miiatron. They are a large cult that go up to random strangers and shout "MIIIIIII" while making a deformed face, usually the nostrils are are inverted upwards, the cheeks are pushed aside and the eyes start popping out. Their leader, Lord MII MII MOO MII MOO, is the only child left of the previous kind, lord MOO MII. MII MII MOO MII MOO has forty five brothers and twenty three sisters, all with the same name but have a number assigned with it e.g. MII MII MII MOO MIII MOO the THIRD. The Mii's used to live with the Moo's in Miiatron, but there was a dispute between the two tribes which resulted in war, known as the great MII war.
It is spelt "MII" but pronounced as "MEE"