Sebastian Griegel is a German actor and voice actor known for his work in film, television, and theatre, as well as for providing German voices for characters in anime series. Born in Garmisch-Partenkirchen in 1993, he is based in Munich and has been active in the entertainment industry since the mid-2010s.

Griegel's voice acting work in anime includes several notable roles. He is the German voice for the character Yoshi in the series Drifting Dragons. He also voices the Helper T Cell in the popular educational anime Cells at Work!. Furthermore, he took on the role of Tomohito Sugino in Koro Sensei Quest!, a spin-off of the Assassination Classroom series. His other anime dubbing credits include characters in series such as Gleipnir, Toilet-bound Hanako-kun, and Arifureta: From Commonplace to World's Strongest.

Beyond anime, Griegel's voice work spans a variety of international productions. He dubbed the role of Louie in the Apple TV+ series Little Voice and provided the German voice for Ty Carter in The Outpost. His other dubbing credits include characters in Acapulco, L.A.'s Finest, and the Norwegian film Espen and the Legend of the Mountain King.

In addition to his voice acting, Griegel has an extensive career as an on-screen actor. He has appeared in numerous German television series, including SOKO Leipzig, Tatort, Die Rosenheim-Cops, and Hubert und Staller. His film work includes roles in the international production Young Woman and the Sea and the miniseries Masters of the Air. Griegel is also a dedicated stage actor and has been a regular performer at the Metropoltheater München in productions such as Wie im Himmel and Der gute Tod. He has received recognition for his acting, including a nomination for a Student BAFTA and the Marta Award for Best Actor.