Glauco Marques is a Brazilian actor, voice actor, singing artist, dubbing director, and instructor known for his extensive work in the Brazilian Portuguese dubs of major anime series and animated films. Born on June 4, 1985, he has built a career spanning a wide range of prominent roles, becoming a recognizable voice in the industry.

Marques is perhaps most widely recognized as the Brazilian Portuguese voice of the swordsman Roronoa Zoro in the long-running series One Piece. His work on the character spans numerous projects, including the specials One Piece: Adventure in Nebulandia and films such as One Piece Stampede and One Piece Film Red. His performance has resonated with fans, with a particular line delivery becoming a memorable moment for the Brazilian audience. Beyond Zoro, his repertoire in anime includes the terrifying antagonist Muzan Kibutsuji in Demon Slayer: Kimetsu no Yaiba, Yamato in Naruto Shippūden, and Zamasu in Dragon Ball Super. He has also voiced characters like Hangetsu Shinonome in Lucifer and the Biscuit Hammer, Bill in Gravity Falls, and Raiden in the Mortal Kombar video game franchise.

In addition to his work in Japanese animation, Marques has lent his voice to numerous films and series from Western animation. Notably, he voiced Pumba in the 2019 live-action/CGI hybrid film The Lion King. He also contributed to the Disney Channel series Star vs. The Forces of Evil, voicing the characters Sensei and Oskar, and voiced Chancellor Esteban in Elena of Avalor. His work also includes the character Yax in Zootopia.

Beyond performance, Glauco Marques also takes on the role of dubbing director. He has served as the dubbing director for the One Piece series in Brazil, further shaping the localization of the franchise for Portuguese-speaking audiences. He is also a co-creator and participant in the Mitsubukai project, a YouTube channel and podcast where he and fellow voice actors from One Piece discuss the world of dubbing, anime, and geek culture.