Two species play the main role in the Orbs universe. Their names are not known, but they characeristics are very different.
The first species is organic and their organism requires lots of resources to survive. This is the main reason they became so demanding and aggressive. They gather resources from other galaxies and from other species in order to survive and feed their growing population. At the same time they can be considered the most technological advanced species compared to their victims.
The second species is the only one being able to withstand the attacks of the first one. They strike down any attempt to steal resources from them and even protect others against the same threat. They are clever but not that advanced than the first one. It is the only species that ever managed to develop a program that could be uploaded to an orb spaceship.