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The Plo Kloon lightsaber for Episode 2 is the one attributed to Mace Windu in the E1 Visual Dictionary. This lightsaber appears in Episode 2 in a couple different versions. The differences are not structural mind you, they are in color. Luminara Unduli is shown in the E2 dictionary holding this style saber with a green blade and the fins on the pommel as well as the cap are colored gold. I haven't personally seen them, but I've heard that there are versions colored blue and green as well.