Harvesters

"I saw... its thoughts. I saw what they're planning to do. They're like locusts. They're moving from planet to planet... their whole civilization. After they've consumed every natural resource they move on... and we're next."

- Thomas Whitmore

The Harvesters are a race of highly-intelligent and technologically-advanced extraterrestrial beings. They are a hive-mind race with a threat of universal proportions that seeks to harvest molten cores from planets to further their fuel and technology at the expense of driving other races to extinction.