He wears a blue gray short sleeved shirt, bluish black sweat pants with a gray jaguar design around his waist and sides and white and black sneakers. He also wears a white and black wristbands in both of his wrist and wears a black jaguar mask (similar to Armor King's). The kanji at the back of King II's shirt reads as "Mishima Industries" (black) and "Evil" (red).
Source:http://tekken.wikia.com/wiki/King/Outfits