Derya Flechtner, who also works under the name Derya Akyol, is a German voice actor known for her extensive work in dubbing anime and other productions for a German-speaking audience. Born in Berlin on July 23, 2000, she began working in dubbing studios at the age of six and was voicing main roles by the age of nine. She comes from a family with ties to the voice acting profession; her brother Till Flechtner is also a voice actor, and her uncle is the actor and voice actor Peter Flechtner.

Flechtner's career encompasses a wide variety of anime roles. She is the German voice of Tarou Misaki in the 2018 reboot of the long-running sports series Captain Tsubasa. In the science fiction action series Akudama Drive, she took on the dual role of the enigmatic Black Cat and the character known as Brother. Her other notable anime credits include voicing Cikapasi in Golden Kamuy, Kaya in Attack on Titan The Final Season Part 2, Lizzy in Cagaster of an Insect Cage, and Gou Mutou in the Netflix original series Japan Sinks: 2020. Further demonstrating her range, she has also voiced Lemon Irvine in the magical fantasy comedy Mashle: Magic and Muscles and provided the voice for a younger version of the protagonist Shiki Granbell in Edens Zero.

Beyond her work in anime, Flechtner is a prolific voice actor in numerous other areas. She has lent her German voice to a wide array of film and television productions, often dubbing actresses such as Isabela Merced, Amandla Stenberg, and Jenna Ortega. Her work includes major Hollywood films like Despicable Me, The Hunger Games, and the Marvel Cinematic Universe's Eternals, as well as television series ranging from Grey's Anatomy to the anime adaptation of Dragon Ball Super. She has also worked as a stage actor and studied acting at the Filmuniversität Babelsberg Konrad Wolf.