Talk:M.U.T.O./@comment-26155014-20150715094532/@comment-25322628-20150718093131

MUTOs are just large parasites that rely on Godzilla and his species to survive, along with needing radiation. The insect-like qualities they exhibit are the eyes and the limbs. They possess more than four legs, therefore not mammals or lobsters. At some point in time, the males evolved into flight-capable creatures.

While it's unknown what they are, explaining their designation, being the UFO of the monsters best describes them.