Fics like The Secret of Rose Lavillant

Who'd have thought a mission to find stop the Vreedle Brothers helping two of Ben's enemies sell alien tech on the black market would herald the discovery of a princess from a world far away that was believed destroyed? When their home planet was invaded by the Highbreed, the Lythrari were decimated by the DNAliens. The only hope for their survival was for the king to send his daughter into an escape pod, and blast her to a world far away from her own, in the faint hope that what she was given can resurrect their race somewhere where the Highbreed will never find them. And so the girl lived under a false identity, no one ever knowing about her extra-terrestrial origin. Until Ben Tennyson shows up in their adoptive home city of Paris, and unintentionally sparks its protectors, Ladybug and Cat Noir, into action to uncover her secret. Things begin to liven up for the mysterious alien girl, especially when word of her existence reaches the ears of the galaxy's biggest mobster with an appetite for endangered species, and a bounty hunter with significant history with the Lythrari is recruited to bring her to him - dead or alive...

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