Materials in Blender Internal work a lot differently than they do in Cycles. In some ways, it's easier and more straightforward.
Cycles gives you a lot of preset shaders (
Emission) and more. Blender Internal doesn't work that way. Instead, you manually configure the properties for each shader. You select your diffuse color, specular color, specular intensity (shininess), hardness of specularity (how smoothly the shiny parts blend into the rest of the material), and more.
You also have a number of different shading options. Since we're going for a cartoon look to our robot, we'll pick the
Toon shader for both our
Specular (glossy) shaders. You can adjust the various ...