A Harika and Yorn. The Harika is the green lizard guy, the Yorn is the whitish brown fur ball on his chest to his right.
The Harika & Yorn evolved as a symbiotic relationship with the warlike reptilian Harika eating the Yorn which serves to control the Yorn's population numbers. They also gain the advice of their somewhat more diplomatically minded food. The Yorn resemble Star Trek tribbles and as such would not be capable of a technological society on their own; the Harika grant them this chance. At the start of the game they are members of the Hegemonic Crux and suffer from the Xchagger virus.