In this AU, Stella is the firsborn child of Marco Diaz (human) and Star Butterfly (half-monster, half-Mewman). Star is the daughter of Toffee of Septarsis and Moon Butterfly, making them Stella's maternal grandparents. Stella's purple skin is a mix of Marco's more human flesh-tones, and Star's blueish-gray skin. Their daughter also inherited Marco's "monster arm" as her tail.

MonStar AU can be seen below: (created by

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Request was given by Observa. Deviantart: obversa.deviantart.com/ This is her character.Here you go!