This is the Garrk, or what it looked like 1,000 million years ago. They were primitive life forms that spent all day eating a special type of grass.
The planet they come from is very much like Earth(but more cubish and studsy):
Also, it is very hard to distinguish between the males and female Garrks(The female has a microscopic pimple on their lower jaw)
They have slowly evolved into intelligent, aggressive, alien humanoids.
They began developing very big weapons of war the moment they discovered metal on their planet, starting out with a huge alien hardsuits, equipped with super-ultra-mega-quad-acidic-laser blasters.
Then, they developed laser cannons and equipped them onto giant 4-legged walkers.
But then one day, their planet ran out of resources. Using their new technologies, the Garrks invaded solar systems and galaxies, hoping to find another planet that contained enough metal to build their machines-of war....
WOW! Epic walkers/ mech things! I also love the evoloution and the male and female pics! Oh yeah, sorry I didn't add you as a favorite(I just did and have realized my mistake and I didn't even realize you weren't one) and sorry I haven't commented on your stuff in awhile.