Doraemon (1979)

Baby Manufacturing Machine (1x89)

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Nobita and Shiuzuka see Gian and Suneo building a model ship in their backyard. Nobita wanted to join, but was rejected because they believed him to be clumsy. Nobita runs back home to build something better or so he claimed. Doraemon left a machine in Nobita's room with an explicit note to not touch and give to the delivery man from the future. The machine said it would create a lifeform, but it had a defect of creating a strong and more powerful race bent on controlling mankind. Doraemon return and somehow managed to end it.