|Japanese Name||リディー・マーレン, Ridī Māren|
|Height||150 cm (4 '11 ' ')|
|Family|| Suelle Marlen (Younger Twin)|
Roger Marlen (Father)
|Appears In||Atelier Lydie and Suelle: Alchemists of the Mysterious Painting|
Lydie Marlen is one of two protagonists of Atelier Lydie and Suelle: Alchemists of the Mysterious Painting.
She is the more stable out of the two twins and looks after her younger sister. The two dreams to one day run the kingdom's top atelier.She isn't very good at physical exercise, but is good at studying. She's social and kind, carefree and does things at her own pace. However, sometimes she can be a bit of an airhead. She was designed and illustrated by Yuugen.