Gwuill namyun : which means 'Light that takes you'
is a synthetic xeno morph that uses living things to multiply it self

they use their victim's body matter and convert them to serve their purposes.

they drift around in space and fall in to any planet, and use what there is to survive and multiply.

and they are highly intelligent and were originally programmed to try to communicate with the inhabitants, and not assimilate any conversable species.

some of them lost that factor and became renegades, but that is a different story in another time.
...

but this one some how looks like it just fell in deep in the middle of an ocean