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The robots wore ninja costumes and had glowing green eyes.
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Powers and abilities
They could hit, leap, shoot crossbows, and attack with chains.
Scooby-Doo! And The Samurai Sword
One of the reasons for the martial arts tournament (other than bringing in puzzle-solving Mystery Inc.), was to analyze the styles of all the top martial arts competitors, and program them into the robots to make them better fighters.