The Blathereen are similar to the Slitheen (see below) in the fact that they are a family and not a species. The Blathereen, unlike the Slitheen, are orange and their main aim is to spread peace throughout the universe. Sarah Jane and the gang was tricked by a pair of Blathereen-Slitheen to trust them. They planted a poisonous plant around the Earth and people everywhere grew sick.
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