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A fictional alien planet from the Karmatron y los Transformables science fiction and fantasy Mexican comic series from the 80s.
Planet Metnal is an ancient, very dark and sinister looking planet located in the far reaches of the universe. It is home to the Metnal people, an evil militaristic culture who promoted war and conflict through the cosmos.
It is the home planet of the evil emperor Asura. The emblem of the Metnal people is a red inverted triangle symbol.