Marcus Eni is a Brazilian actor, singer, voice actor, and musical director. His passion for dubbing began in his childhood, and he started working in the field at the age of thirteen, though his professional career in voice acting began approximately six years ago. He has since become recognized for voicing characters in a variety of successful series and animations.

In anime, Eni voiced the protagonist Matthias Hildesheimer in the 2022 fantasy series The Strongest Sage With the Weakest Crest. This role marked his first time as a lead character in an anime. His other anime credits include roles in BLUELOCK as Aoshi Tokimitsu, Edens Zero as Jesse, Platinum End as Mizukiyo Minamikawa, and Blue Period as Takuro Ishii.

Beyond anime, his work in western animation includes the role of Pavitr Prabhakar, the Indian Spider-Man, in the feature film Spider-Man: Across the Spider-Verse. He also provided the singing voice for the character Clyde McBride in The Loud House and voiced Tronco in Trolls: TrollsTopia. Eni dubbed the lead role of Lilo, a singing crocodile, in the live-action/animated film Lilo, Lilo, Crocodilo. His other film dubbing work includes characters in Gran Turismo: De Jogador a Corredor, Five Nights at Freddy's: O Pesadelo Sem Fim, and Super Mario Bros.: O Filme. In live-action series, he dubbed Ajax Petropolus in Wandinha.

Eni is also a singer and composer whose music is influenced by contemporary R&B. As a musical director, he worked on the Brazilian version of the animated series Guerreiras do K-Pop. He is also known for voicing the popular internet character Macaquinho Severino.