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Artwork from Light & Dark
|Trainer class||Cosmos Admin|
|Member of||Team Cosmos|
|Anime debut||The Mysterious Team Cosmos Appears!|
|English voice actor||N/A|
|Japanese voice actor||N/A|
Marianne was once a budding scientist in the Hora region, becoming very well known for her research in the field of human and Pokémon relationships. However, after an unknown experiment was exposed to the public, she was slated to be arrested causing her to go into hiding.
Years later, she emerged as an Admin of Team Cosmos.
Marianne wears the mask of a kind a gentle woman to conceal the insanity that she has become. According to Wolfgang, she is Team Cosmos' resident "mad scientist", something she scoffed at, but did not deny.
Marianne does not use the conventional types of Team Cosmos, instead preferring to use Pokémon she deems will help the most with her research. Despite her apparent insanity, she seems quite fond of her Pokémon, and they of her.
Her name likely comes from the famous German violinist, Marianne Scharwenka.
Her Japanese name literally means "violin".