He has slanted blue eyes and long, blonde hair that he pulls into a half up-half down style, leaving some hair covering his left eye. He wears the Akatsuki robe over typical ninja clothes.
Deidara loves art, and appreciates all forms of it. He has a cool and relaxed attitude, but gets somewhat annoyed with Tobi's playful and lack of focus actions. He uses Earth type jutsu's and explosive clay that he activates by saying "Katsu!" and making a single ram hand seal. He likes to experiment with his clay.