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Langdon Cobb was an actor and one of the antagonists on Futurama.
One of his most distinguishing features is a brown paper bag over his head. The purpose of this bag is to conceal his face, because he is a space lichen. Space lichen feed on the admiration of their prey. The person viewing their true face will have their "life forces" sucked out of their body. The only way to get the "life forces" back, is to weaken the space lichen's ego.