Marios Gavrilis is a German voice actor and actor who has become a prominent figure in the German dubbing industry. He is particularly well-known for his extensive work in anime, where he voices leading and supporting characters across numerous popular series. His career in voice acting began around 2009, and he has since amassed over 200 dubbing roles. In addition to his voice work, Gavrilis is also an on-screen actor and has performed in theater productions at several major German national theaters.

One of Gavrilis's widely recognized anime roles is Sousuke Yamazaki in the series Free! - Take Your Marks- and the broader Free! franchise. This role is part of a larger body of work that includes several other high-profile characters. He is the German voice of Reiner Braun in the long-running series Attack on Titan, a role he has portrayed across multiple seasons and compilation films. He also provided the voice for Rintarou Okabe, the protagonist of the acclaimed science fiction series Steins;Gate and its sequel Steins;Gate 0. His other significant anime voice credits include Gajeel Redfox in Fairy Tail, Kyogai in Demon Slayer, Dio Brando in JoJo's Bizarre Adventure, Charlotte Katakuri in One Piece, Kyouhei Kadota in Durarara!!, and Jaeha in Yona of the Dawn.

Beyond anime, Gavrilis has an extensive career voicing characters in video games and live-action series. He is the German voice for major video game protagonists such as Alexios in Assassin's Creed Odyssey, Sam Porter Bridges in Death Stranding, Bruce Wayne in Gotham Knights, and Dani Rojas in Far Cry 6. His work in live-action dubbing includes roles like Denver in the Spanish series Money Heist, Jesse Custer in Preacher, and Michael Gray in Peaky Blinders. His versatility has made him a notable figure in the German dubbing industry, working across various genres and formats.

Gavrilis has received recognition for his work, winning two awards at the SOVAS Voice Arts Awards in Los Angeles in 2019 for Best Dubbing in a Foreign Language and Outstanding Body of Work in a Foreign Language. He is known for his dedicated approach to voice acting, treating it as a form of acting that requires the same authenticity and emotional depth as on-camera performance. He has noted the physically demanding nature of voicing the intense and over-the-top characters often found in anime, emphasizing the importance of craft and authenticity in bringing these larger-than-life figures to a German-speaking audience.