This part of the logo is the one added below both Dragon Ball word art.     
Draw 10 small circles slightly apart from one another. As reference,  you can use a Japanese katakana characters shown in http://www.omniglot.com/writing/japanese_katakana.htm to familiarize yourself with the symbols used in the Dragon Ball logo. Draw the Japanese characters in the correct order. Draw the Dragon Ball Z logo with the dragon logo over the encircled Japanese text. Outline the drawing and remove the sketch marks. Add color.