Step 16: Draw a few lines above his head for Dr. Eggman's goggles. Draw two rectangle-like shapes on either side of the vertical line, then draw another line parallel to the head for the strap.
Step 17: Draw a few small, vertical lines within the shape of the goggles for extra detail. On top of the shape, draw another rectangle-like shape for the goggles' lenses.
Step 18: That’s it! You now have a nice sketch of Dr. Eggman. You can stop at this quick drawing for a rough, sketchy look or go for a more finished look by continuing to the step below.
Step 19: For a more finished, inked look, carefully draw over the final sketch lines with a pen or marker. Wait for the ink to dry, and then get rid of every pencil mark with an eraser. You now have a finished inked drawing of Dr. Eggman! You can stop here or go to the final step to complete your Robotnik drawing.
Final Step: For a completely finished Robotnik drawing, you have to color it. You can use markers, color pencils or even crayons! Color his goggles gray. His skin is peach, but if you don't have peach, improvise and use yellow-orange or light brown. Experiment! For his glasses alternate between light blue and dark blue. His nose is pink. His mustache is light brown with some dark brown in the bottom as shading. That’s it! You now have a completed drawing of the villain Dr. Eggman from the Sonic the Hedgehog video games and cartoons.