how many individual mutos are there?

GODZILLA HIMSELF
MemberMothra LarvaeApril 21, 20142394 Views24 Repliesin the trailer where we get a brief glimpse of the flying muto, it looks almost as big as godzilla, however, in the wondercon footage, the muto looks waayyy smaller! anyone have an explenation for this, or could there be more of these than we thought?
king of the monsters