What I remember about the series the human race created a genetically engineered slave species, they rise up and take over earth. The humans have to join up with space pirates to take back the earth. They fight in robots that are basically exoskeleton.

Exo-Squad (93)

The Exosquad was what remained of Earth's defense force. A team of human surviors,(and a Neo named Marsala) led the effort to take the Earth back from theNeo-Sapiens.
The Neo-Sapiens were a genetically engineered and mass manufactured race of people that were originally made to be a slave caste with enhanced strength, and intelligence,
But they rebelled and took over the Earth


Exosquad Opening (http://www.youtube.com/watch?v=wHKyY2DTEco)