Dark Forms

Dark Versions are different types of evolution of aliens. The alien becomes black, and his powers becomes darker.

Appearance of dark versions
Dark versions are usually black and dark grey. Their eyes always stay the same though. a

Additional Powers
Other than being evolved, Dark aliens have a bunch of new types of powers, including:
 * Becoming invisible
 * Controlling darkness
 * Becoming intangible
 * More agility
 * Sneakier
 * More evil than original versions, and don't care about killing people