User blog comment:DerpLord12/precursers/@comment-108.166.138.178-20170427160859

While we don't know the TRUE appearance of the Precursors, we do know this:

They were capable of telepathy(mind-reading).

They were MUCH larger than humans.

They could live for thousands of years.

Other than those facts, we don't know what they truly looked like and most likely never will.