Sunnyi Melles is a Swiss actress and voice artist known for her extensive work in German theater, film, and television. Her training was completed at the Otto-Falckenberg-Schule in Munich, and she became an ensemble member of the Münchner Kammerspiele. She later joined the Bayerisches Staatsschauspiel in 2003. In recognition of her stage work, she has received the Nestroy Theatre Prize for Best Actress and the Bavarian Order of Merit. On screen, she has appeared in numerous productions including the Palme d'Or winning film Triangle of Sadness.

In the field of anime voice acting, Sunnyi Melles is known for providing the German voice for the character Sophie Hatter in the Studio Ghibli film Howl's Moving Castle, which is known in German as Das wandelnde Schloss. Directed by Hayao Miyazaki, this film was nominated for an Academy Award for Best Animated Feature. Her performance as the lead protagonist Sophie, a young hat maker cursed with old age by a witch, stands as her most prominent credit in the anime genre. No other major anime voice roles for Sunnyi Melles are documented in the search results.