Muto sounds like the rumored spider-like creature, which is similar to Kumonga, a giant spider kaiju created by Toho Studios that first faced Godzilla in the 1967 Son of Godzilla. “According to the journal of the now deceased Dr. Matsumia, Kumonga was a type of very large spider to dwell in the jungle of Sogellel Island. However, exposure to the radioactive storm created by the UN’s failed weather experiment transformed Kumonga into a 45-meter tall monster.” – Godzilla Wiki.
An Imgur user posted several images of the alleged upcoming Godzilla action figure set. In the background you can see piece of another creature, presumably Muto. A user over on Godzilla Movies assembled the pictures into what could be the outline of the monster. Guess we’ll find out next summer when the Gareth Edwards-directed remake stomps into theaters May 16, 2014.