Marek Harloff is a German actor and voice actor, born on April 22, 1971, in Hamburg, Germany. He began his performing career at a very young age, appearing in an episode of the children's program Sesame Street when he was just four years old. Growing up in an artistic family, with a father and grandfather who were both directors, he was exposed to the entertainment industry from childhood. He initially pursued studies in German studies and philosophy, followed by music with the aspiration of becoming an opera singer, which included classical vocal training. His entry into acting came about by chance when he stepped in for his brother, actor Fabian Harloff, for a role in the television crime series Ein Fall für zwei. This opportunity led to further television work and established him as a screen actor.

Alongside his extensive on-camera career in German film and television, for which he has received awards such as the Golden Lion for his performance in Bella Block, Harloff has built a substantial body of work as a voice actor. His voice acting credits include dubbing roles for various international productions into German. Notably, he has provided the German voice for characters in several anime and animated series. Among his prominent anime dubs are the role of Hikaru Matsuyama in the classic sports series Captain Tsubasa, known in German as Die tollen Fußballstars, and the character Jim Hawkins in the animated series Die Schatzinsel, based on the novel Treasure Island. He also voiced the adult Obito Uchiha in the long-running series Naruto Shippuden and is the German voice for the beloved bear in Paddingtons Abenteuer. Beyond animation, his voice work extends to dubbing roles in live-action productions, such as the Danish political drama Borgen.

Contrary to the premise of the query, available and reputable sources do not credit Marek Harloff as the voice actor for the characters Kazuki Aoyama in Tribe Nine, Hibiki in Bubble, or Franz in a Swiss Family Robinson anime. Information from animation databases and production credits for the Tribe Nine anime identifies the Japanese voice cast, with the role of Kazuki Aoyama performed by Shōya Chiba. Similarly, the 1974 Canadian television series Swiss Family Robinson, which is a live-action drama and not an anime, features actor Ricky O'Neill in the role of Franz Robinson. No information could be verified regarding a voice role for Harloff in the film Bubble.

His career is defined by a dual track of on-screen performances and voice work. In addition to acting, he is a multi-instrumentalist musician and a founding member of the band TempEau. He has also been a regular ensemble member at the Schauspiel Köln theatre since 2013, demonstrating a sustained commitment to stage performance alongside his screen and voice acting endeavors.