Nicole Hannak is a German actress and voice actress born in 1981. She completed her training at the Stage School Hamburg, a school for music, dance, and drama, and also took private acting and singing lessons. After her training, she moved to Berlin in 2005 with the goal of becoming a voice actress. Her first major role came in 2006 when she was cast as the lead character Frankie Foster in the animated series Fosters Haus für Fantasiefreunde. Since 2007, she has been a prominent voice in many Berlin-based synchronizations.

Hannak has lent her voice to a wide array of characters in anime and animated series. She is well-known for providing the German voice of Mikasa Ackerman in the popular anime series Attack on Titan, a role she has reprised across multiple seasons and films, including Attack on Titan The Final Season and Attack on Titan: The Roar of Awakening. In the romantic comedy series The Quintessential Quintuplets, she voices the character Itsuki Nakano. Her other notable anime roles include Wiz in KONOSUBA - God's Blessing on This Wonderful World– Legend of Crimson, Sena Kashiwagi in Haganai, and Roselia Ishtaris in The Demon Sword Master of Excalibur Academy. She also voiced Shiryuu Chouun in Ikki Tousen: Xtreme Xecutor.

Beyond her work in Japanese animation, Hannak's voice acting career is extensive and includes a significant number of roles in live-action series and films. She has established herself as the regular German voice for several actresses, including Camilla Luddington, whom she dubs as Dr. Jo Wilson in Grey's Anatomy, and Alexandra Roach. Other prominent voice roles include Jemma Simmons in Marvel's Agents of S.H.I.E.L.D., Sabine Wren in Star Wars Rebels, Megan Draper in Mad Men, and Helga in Vikings. Her work also spans across video games, documentaries, and advertising. Nicole Hannak continues to live and work as a voice actress in Berlin.