Combine

The Combine is the multidimensional empire which serves as the primary antagonistic force from the 2004 video game Half-Life 2, and the subsequent episodes developed by Valve. It also appears in Wall-e the human touch 2. The Combine consists of organic, synthetic, and heavily mechanized elements. Later, it invaded the planet Earth and wiped out the majority of human civilization 700 years ago. Their goal is to exterminate WALL-E and his friends.