Step 6: Draw in a cheek line by making a backward C-shaped curve below the wavy line of his eyes. To the left of this line, draw a tilted letter D shape for Sonic teh Hedgehog's mouth.
Step 7: Sketch in basic guides for the spikes on the back of Sonic the Hedgehog's head by drawing three triangles. Draw one spike on the top right of his head, and make it slightly graze the tip of the right ear. Draw the middle spike slightly pointing down, and make the last one point down and end touching the bottom part of his cheek line.
Step 8: That's it for the initial sketch of Sonic the Hedgehog from the Sega video games! You have the basic Sonic the Hedgehog shape, so now go in and tighten your drawing. From this point on, press harder with your pencil in order to get darker lines and a more defined sketch.
Step 9: Tighten the shape of Sonic the Hedgehog's nose and draw it skinnier the closer it gets to his face. Draw a small oval within it to indicate glare.
Step 10: Using the shape of his head and the horizontal construction line as guides, draw in Sonic's snout. It almost looks like a hot dog.