Ilena Gwisdalla is a German actress and voice artist known for her extensive work in dubbing, particularly for anime series and international films. Born on January 13, 1984, in Essen, Germany, she pursued formal acting training at the Schauspielstudio Gmelin in Munich from 2004 to 2007. Following her graduation, she gained practical stage experience as an ensemble member of the Fränkischen Theaters Schloss Maßbach until 2009 and participated in various theater productions, including the Heppenheim Festival's staging of A Midsummer Night's Dream in 2013.

Gwisdalla began her career as a voice actor in 2009 and has since become a prominent figure in German dubbing. Her work is frequently based out of Munich, where many of the studios she collaborates with, such as SDI Media Germany and Violetmedia GmbH, are located. Beyond voice acting, she has also narrated audiobooks, with her first, Das Haus, das in den Wellen verschwand by Lucy Clarke, released in 2016.

Her filmography in anime is extensive and features a wide array of prominent characters. She is perhaps best known for being the long-standing German voice of Boa Hancock, the Empress of Amazon Lily, across numerous One Piece installments, including the main television series, the special One Piece 3D2Y: Overcoming Ace's Death! Luffy's Pledge to His Friends, and the film One Piece Stampede. Another significant and long-running role is Summer Smith in the popular series Rick and Morty.

Her repertoire showcases considerable range, from powerful and regal figures to more nuanced characters. She voices the goddess Aphrodite in Record of Ragnarok, the noble Helga Piarosa in Record of Grancrest War, and the loyal bear pup Atla in Kuma Kuma Kuma Bear. In the fantasy comedy Interspecies Reviewers, she plays the slime girl Mii. Her roles also include the determined Akari Acura in Chaika - The Coffin Princess, the competitive Misa Aoi in Kandagawa Jet Girls, and the stern Izabella in The Misfit of Demon King Academy. She voiced Ann Takamaki in Persona 5 the Animation, the demon Astaroth in Combatants Will Be Dispatched!, and Yuki Shimazaki in Rin - Daughters of Mnemosyne. Other notable credits include Mordred in Fate/Apocrypha, Katalina in Granblue Fantasy the Animation, Hana Midorikawa in Prison School, and Kirara Hoshino in Super HxEros.

A recurring theme in Gwisdalla's career is her association with long-running franchises and her ability to portray characters with strength and complexity. Her work is characterized by frequent collaborations with Munich-based dubbing studios and casting directors, contributing to a consistent and high-quality presence in the German-language versions of major anime titles. Her voicing of Boa Hancock across more than a decade of One Piece content exemplifies her dedication to key roles.