Olivia Büschken is a German voice actress born in 1992 in Berlin. She began her training at the Schule für die darstellenden und bildenden Künste, Die Etage, in Berlin in 2013 and completed her studies there three years later. Her entry into the voice acting industry was influenced by her father, Uwe Büschken, who is also a established voice actor. While her career encompasses a wide range of live-action dubbing, she has built a substantial portfolio of work in anime and animation.

Büschken's voice can be heard in a variety of anime roles across different genres. She is the German voice of Elizabeth Midford in multiple installments of the Black Butler franchise, including the OVAs Black Butler: Book of Murder and the film Black Butler: Book of the Atlantic. She also voiced the character in Black Butler: Public School Arc. In the science fiction genre, she provided the voice for the Logicoma robots in Ghost in the Shell: Arise and Ghost in the Shell: The New Movie. Her other notable anime roles include Satoko Tonai in the film Drifting Home, Aki Adagaki in Masamune-kun's Revenge, Karen Jinryou in Shomin Sample, and Allu Lux in Lost Song. She also voiced Asami Ashikawa in Aoyama Gōshō Tanpen-shū 2, Chie Hori in Tokyo Ghoul: Pinto and Tokyo Ghoul:re, Fubuki in the KanColle anime, and Nazuna Nanakusa in Call of the Night.

In addition to her anime work, Büschken has voiced major characters in other prominent animated series. She is known as the German voice of Lucky Prescott in the Spirit: Wild und frei franchise and voiced Pidge in the German version of Voltron: Legendary Defender. In the Star Wars universe, she lent her voice to the character Tamara Ryvora in the animated series Star Wars Resistance. Her early career also included the role of a young Son Gohan in Dragon Ball Z Kai.

Beyond animation, Büschken has gained recognition as the regular German dubbing voice for several live-action actresses. She is notably the German voice of Sydney Sweeney, dubbing her in series such as Euphoria and The White Lotus, as well as for actress Paris Berelc. This extensive body of work demonstrates her versatility and established presence in the German dubbing industry.