The end (spoilers obvious because the title says The END)
When the creatures come from the ship the one leading the pack looks like CJ7. Now, the rest of them all have very different facial markings and colors differentiating them from the others. So are we to assume that CJ7 itself returned or that it was simply a lookalike that happened to lead them?
Also I thoroughly enjoy that they took the time to make them different. Most people make the aliens in their films look the same and thereby more of a movie creation and less like an actual species.
The short one's gawking at me and the tall one's being very droll.