Josh, Brother Jordan and Korey/Kylo travel back in time to the 1993 to honor the Power Rangers, Zordon and the late Jason David Frank.

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from wiki - Green with Evil is a five-parter and serves as the seventeenth, eighteenth, nineteenth, twentieth, and twenty-first episodes of the first season of Mighty Morphin Power Rangers. It features the debut of Tommy Oliver, who would eventually become the most experienced Ranger of all time.