most lifeforms in the galaxy, even the non-humanoids, are so similar to each other: the majority of them are carbon-based, for instance, and share a bilateral symmetry and similar organs, like eyes , brain , digestive tract , limbs , etc... Read more Forerunner (Halo) Ursinoid Borg Retrieved from " http://aliens.wikia.com/wiki/Ancient_humanoid?oldid=46057 "