Creature:Mardian

The Mardians are the dominant race from planet Mardia.

Biology
Mardians have rather unremarkable internal systems. The only thing worth noting is the fact that they are able to go long tracts of time without eating. (Some still eat as often as humans do.) The first thing you are likely to notice is their 6 cranial fins, which are vestigial structures. Their skin is resistant to most types of corrosive agents, due to their earliest ancestors rising out of the acidic Mardian oceans. They are somehow able to jump ludicrous heights, it's likely due to their ancestors actual feat of rising to the surface, as the early Mardian seas were, basically, a dense, acidic muck.

Culture
Early Mardian culture was mostly fanatical killing. As time went on, Mardians became resentful of this culture, and toned it down. The Mardians who preferred this lifestyle split away from the mainstream Mardian Empire and formed the Mardian Outcasts.

Separation
The Mardian Outcasts are ruled by the Outcast Grand Inquisitor. They pillage the galaxy, destroying everything they deem unfit to share an existence with them. Mardians in the Outcast military wear elaborate helmets, the most coveted, even to those who are not Outcasts, is the Grand Inquisitor helmet.

Trivia

 * I got the idea for their name after remembering the name of a server in Maplestory, Mardia.
 * I didn't catch the resemblence to the Alien Greys until an hour after creating their species.