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Leo Elster is one of the main characters from channel 4 series Humans, he is the half synth-half human son of David Elster, the creator of the synths. He has four synth siblings Fred, Niska and Max, there is also Mia who is a synth he sees as a mother figure. He doesn't have much faith in humanity and doesn't get on with manh people but he manges to befriend the Hawkins family, especially Matilda "Mattie" Hawkins but lots of people think they might become each others romantic interest
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