User blog comment:DirgeOfCerberus111/Totalimmortal's Alternate Timeline Idea (continued)/@comment-25033299-20110929062511

Alien traits:
 * Physically weak
 * Intellectually superior to the smartest humans
 * Live extremely short lives, even with their tech, they seldomly reach 45 Terran years.
 * 5 fingers, the outer two being thumbs,
 * Pale skinned, dark haired, green eyed
 * Only communicate once to say "we are the ____ and we cannot be defeated" or something along those lines.
 * Cannot utililze teleportation technology
 * Move swiftly over large distances (such as between galaxies), but slow in short distances (within a galaxy)