Sebastian Christoph Jacob is a German actor and voice actor based in Berlin. He trained under Maria Körber and Joachim Kerzel, as well as at the Schauspielakademie Zürich. His professional work is primarily in German dubbing, where he provides the German-language voices for characters in international films and television series.

In the realm of anime, Jacob is known for his voice work in the German adaptations of the Ikki Tousen series. He provided the German voice for the character Genjou Kakouton in the 2007 anime Ikki Tousen: Dragon Destiny. He also voiced the same character, Genjou Kakouton, in the subsequent series Ikki Tousen: Xtreme Xecutor. The character's original Japanese voice actor is Shuuhei Sakaguchi.

Beyond the Ikki Tousen franchise, Jacob's work in anime includes voicing Mu La Flaga in the German version of Mobile Suit Gundam SEED. His dubbing career is extensive and spans a wide variety of live-action genres. He is the regular German voice for numerous actors, including Gael García Bernal, Adam Goldberg, David Zayas, Tom Ellis, and Edgar Ramírez. Some of his notable live-action dubbing roles include Christopher Hayden in Gilmore Girls, Angel Batista in Dexter, and he is also the voice of Sheldon J. Plankton in the German version of SpongeBob SquarePants.