Ok so this was interesting
This was pretty intersting and i guess you have three differant robots as i look at them abit more close, i thought they were differant variations of the same and in away i guess they could be, but anyways The "SHINE" youput on this one was pretty neat, but i think you should have had some more of that shaine with some sparkle to it, The backround cameout well and was very fitting to this, you should have also added some sort of "LIGHTS" like flashing but since this is more of a still make it just a red light.
~~THINGS TO IMPROVE ON~~
A decent robot like character here, could use some more shine and maybe some red and blue lights and such.