Borderlands 2 Concept

For our concept design class our next project we are coming up with art for Borderlands 2 make-believe downloadable content. My assignment was to come up with some kind of armored robot that can be used as a weapon that you would have to fight. We decided that it'd be cool if he was made up of tiny claptrap robots. So I tried to imagine what it would look like if they were all suddenly magnetized together to form a huge mech-like robot. I like the top left design of a robot that walks on his hands, but it would be made out of small scraps and have more guns like the 4th robot down.