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Scientist Shirley
Scientist Shirley is a mad scientist. He also is a bad recolor and a generally cliche character that apparentally only appears in a fanfiction story called Operation M.O.N.S.T.E.R. He has a robotic left arm, robotic left leg and googles. He shoot and kills Damaged Numbuh 4. He created Evil Numbuh 3's robotic claw for left hand. He has a pet giant monster. When giant monster chopped off his left face, he dies. He was voiced by a Tom Kenny.