Julian Valerio Rehrl is a German-Austrian actor and voice actor, born in Spittal an der Drau, Austria, in 1997. He began his career in voice acting at the age of twelve, providing voices for children and teenagers in animated series and films. His early work included roles in the animated series Der kleine Nick and Der kleine Ritter Trenk. He pursued formal training at the Hochschule für Schauspielkunst Ernst Busch in Berlin from 2015 to 2019 and has been a permanent ensemble member at the Theater in der Josefstadt in Vienna since 2019.

In the realm of anime and animation dubbing, Rehrl has contributed German voices to several series. He is the German voice for Kuromaru in the anime series Sword Gai: The Animation. He also provided the German voice for the character Seiji Hokuto in the Netflix anime series Ultraman. His other work in animated series includes the role of Gyselher in Der kleine Ritter Trenk and Chlodwig in Der kleine Nick. He has also voiced characters in series such as Disenchantment and 7 Seeds.

Rehrl's voice work extends beyond animation to include numerous live-action dubbing roles. He is notably the regular German voice for actor Bradley Steven Perry, providing the German dubbing for his roles as Gabe Duncan in Meine Schwester Charlie, Kaz in Mighty Med – Wir heilen Helden and its spin-off S3 – Gemeinsam stärker, and the title role in Jack Parker - nicht ganz schwindelfrei. He has also dubbed for actors such as Jimmy Bellinger in Liv & Maddie, Ryan Ochoa in Pair of Kings – Die Königsbrüder, and Chandler Riggs in Unschuldig hinter Gittern.

Alongside his voice acting, Rehrl maintains an active career on stage. Since joining the Theater in der Josefstadt, he has performed in numerous productions, including leading roles in Der Sohn, Was ihr wollt, and James Brown trug Lockenwickler. His stage work has garnered critical acclaim, with reviewers noting his performances as a significant talent. In 2018, he was part of a group of students awarded the Max-Reinhardt-Preis at the deutschsprachigen Schauspielschultreffen in Graz.