Márcio Simões (b. 1962) is a Brazilian voice actor who dubbed Baby Gonzo in the localization of Muppet Babies. He went on to dub the adult Gonzo in most projects, beginning with Muppets do Espaço (Muppets from Space). ‎He also dubbed the title role in Jack Frost.

Simões has lent his voice to an assortment of animated or puppet mascots and presenters for Rede Globo and other Brazilian networks. He is the primary Brazilian voice of Samuel L. Jackson, Alec Baldwin (including 30 Rock), and Laurence Fishburne (from the Matrix series onward). Simões also dubbed Patrick Stewart on Star Trek: The Next Generation and in the Trek films, Mark Williams in the Harry Potter movies, Ralph Fiennes in The English Patient, Peter Dinklage on Game of Thrones, Morgan Freeman in Batman Begins, John Goodman in The Big Lebowski, Kiefer Sutherland on 24, Victor Garber on Alias, and Kevin Sorbo on Hercules: The Legendary Journeys.

Cartoon roles include Daffy Duck and Sylvester in Looney Tunes shorts and features, the Genie in Aladdin, Principal Skinner on The Simpsons, Donatello and Rocksteady on Teenage Mutant Ninja Turtles, and Stitch in Lilo & Stitch.

Muppet dubbing credits