I got inspired to build some more robot goodness after watching a movie called Vexille: 2077(its on Hulu)and picking up a couple of the Space Police K9 Bot sets for parts. The Ninjato is basically a spy robot. The four legs also make it very stable so it's also useful for a mobile artillery platform.
About this creation
Ninjato armed with an EMP pulse antenna
Legs locked in position with the cannon ready to fire
Just to show scale with a minifig
This is another variation just with longer legs
With the legs spread out the Ninjato can move in a type of stealth mode
The ability to vary it's height helps it to make the best use of any terrain
Plenty of Space Police troopers is what you'll get before you know it
Oh! Vexille! Nice, the similarity is an automatic recognition. I made one of the guard robot dudes...need to upload that... I really like what you did with the 2 x 2 round plate. It gives a sense of military prestige. G'job.