RULONS

Rulons are an aggressive humanoid batracian species which developed space faring technology and with it, expanded into an interstellar empire.
Rulons need to be immersed in water at all time and when offworld, always stay enclosed in hermetic suits that keep them wet.

Rulons have taken other civilisations under their dominion and use them as manpower and gunfodder. Among them the saurianVipers and Kroks, the insectoid antmen, the Skates and the hammerheads.
Source: Dinoriders