Guilherme Lopes is a Brazilian voice actor and actor, recognized for his extensive work in dubbing for film and television. Born Luiz Guilherme de Azevedo Lopes on October 8, 1959, in São Paulo, he has built a career spanning over three decades, becoming a prominent figure in Brazilian dubbing. His voice is known for a wide range of characters in animation and live-action, as well as for his on-screen acting roles.

Lopes's work in anime and animation is diverse. He voiced Guile in the various adaptations of Street Fighter II, including the animated movie and series. In the popular franchise One Piece, he voiced the character Douglas Bullet in the film One Piece Stampede. He also took on the role of Naobito Zenin in the series Jujutsu Kaisen. His contribution to the Transformers franchise includes voicing Megatron in the Netflix series Transformers: War for Cybertron Trilogy: Siege, a role performed at the Delart studio in Rio de Janeiro. Earlier, he had voiced Optimus Primal in the classic series Beast Wars.

Beyond these roles, his dubbing filmography includes a vast array of characters. He is known for his work in the Dragon Ball franchise, providing voices for characters such as Mr. Satan and Nappa. He also voiced Batou in Ghost in the Shell and Lorde Tirek in My Little Pony: A Amizade é Mágica. In addition to animation, Lopes is frequently the Brazilian Portuguese voice for renowned actors, including Samuel L. Jackson, Laurence Fishburne, and Dolph Lundgren.

Alongside his dubbing career, Guilherme Lopes is also an actor who has appeared in numerous Brazilian television productions, including series like O Astro, Passione, and Chapa Quente. He has also performed in theater and film. In 2016, he relocated to Rio de Janeiro to continue his work in both dubbing and on-screen acting.