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Marianne was created by The Puppeteer, along other puppets, as a way to spread happiness and joy through Carnivalia. The shows she was part of where like no other. However, being behind the scenes, without being seen, praised or given credit for, The Puppeteer grew bitter and jealous of his own puppets, and in a fit of rage threw them all away, and with them his famous puppet-show.
Marianne landed on a waste dump, where all the bits and bobs ended up, and stayed there, with no life, for several years. It took The Puppeteer to realize the mistake in his ways for her to come to life, as he shed a last tear that contained in it all the despair of never seeing his puppets again. This tear divided into several tears, one which fell on Marianne, making her a living being.
Being surrounded by unwanted trash, Marianne was anything but comfortable and decide to revolutionise the place, single-handedly creating a paradise of oddity and mechanics, by tinkering the trash into a natural utopia.