Central Officer Bradford has personally substantiated claims that the massive front-line unit they call the Muton was actually at one time even larger than the specimen I have before me today. As it is, the creature is abnormally warm to the touch for a corpse, and I must say, it's quite disconcerting.
Having never seen any of the previous Muton variants personally, I can only go by the stories I've heard from Central Officer Bradford and others. As they say, the current breed is apparently on the smaller side, although considerably more agile than the originals. Internally, the subject maintains all the hallmarks of extensive genetic modification, with additional musculature and bone protecting the internal organs from any risk of direct contact. The aliens clearly spent a great deal of time and effort honing the abilities of the Muton as a front-line combat soldier. I had heard that our soldiers believe the Mutons to be part of a tribal society, at least originally, based on their unusual battle cries and markings seen in the field. Having finally gotten a closer look, I can confirm the presence of unusual scarification that could certainly be attributed to ritualistic behaviour of some kind. R.Tygan