Draw a large rectangle for the head and upper helmet
Add two side antennae on top of the head
Sketch a strong jawline and faceplate in the center
Draw the chest as a wide, angular truck-front shape
Add two window panels on the chest
Draw the shoulder armor as large rounded rectangles
Sketch the upper arms extending downward from the shoulders
Add bulky forearms with mechanical panel lines
Draw large hands with thick fingers
Sketch the torso as a broad armored block
Add the waist section with layered mechanical shapes
Draw the upper legs as thick rectangular forms
Add knee armor with angular plates
Sketch the lower legs as large, sturdy blocks
Add the feet as wide, flat shapes for balance
Draw wheel details on the shoulders or legs
Add panel lines and vents across the body
Refine the helmet edges and facial features
Darken the outline and erase guide lines
Color the armor red and blue
Color the faceplate and mechanical parts silver or gray
Add yellow or gold accents on the chest and shoulders
Shade the edges to give the robot a metallic look