Step 15: Use the angled line and small circle on the left side of the body as a guide to draw Mewtwo's other arm and fist. Darken the initial guide for the arm but make the shape curvier. Add a second line at the bottom for the lower edge of the arm. Don't make the arm too thick. Draw the shape of the fist within the small circle. Draw the curled fingers using a series of curved lines. Draw circular shapes for the fingertips.
Step 16: Use the long, angled line on the left side of the body as a guide to draw Mewtwo's other leg. Lightly sketch the shape of the leg around the guide. Make the top part big and round. The bottom part should be thin. When you get the shape right, darken the lines. Draw a small circle at the joint. At the tip of the foot, draw the toes using a couple of curved lines.
Step 17: Darken the line on the right to start drawing Mewtwo's tail. Continue to make the line longer and curve the top part down to create the tip of the tail. At the bottom, draw another long, curved line to make the shape thicker. The bottom of the tail should be thicker than the top, except for the tip. The tip of the tail should be round and thick.
Step 18: Go over the final sketch lines with a pen, marker or any other type of permanent ink. Take your time and be careful when you ink to avoid any accidents. After the ink dries, get rid of every pencil mark with an eraser for a cleaner Mewtwo drawing.
Final Step: Color your drawing using colored pencils, markers or crayons! Use light purple for the main part of the body. You can also leave the body blank and just add some shadows using purple. Color the lower half of the torso and the tail dark purple. Color the eye purple too. That's it! You know how a finished drawing of Mewtwo from Pokemon.