Fernando Márquez is a professional dubbing actor from Caracas, Venezuela, who began his career in the voice acting industry in 2003. He has built a extensive career lending his voice to a wide variety of characters in anime, animated series, and live-action productions for the Latin American Spanish market.

In the realm of anime, Márquez is recognized for his role as Igneous in the series Spider Riders, which aired from 2006 to 2007. His other prominent work in Japanese animation includes voicing the Homunculus known as the Dwarf in the Flask, as well as Bido and Bobby, in the Animax broadcast version of Fullmetal Alchemist: Brotherhood. He also contributed to the series Blue Dragon, where he voiced Homeron Junior among other characters, and provided additional voices for Halo Legends.

Beyond anime, Márquez's voice work is particularly prolific in Western animation. He has been involved in numerous high-profile projects, taking on roles such as Snarf in ThunderCats, Robin and later Nightwing in the first two seasons of Young Justice, Shadow in Sonic Boom, and Ronaldo Fryman in Steven Universe. He also voiced characters like Sumo in Clarence, Pickle in Blaze and the Monster Machines, and Gui in the first season of Gui and Estopa. Notably, he has been part of the Spanish dubbing cast for the long-running series SpongeBob SquarePants, performing as SpongeBob in some songs from the eighth season and as Gary the Snail starting from the ninth season.

His extensive filmography also includes dubbing work for live-action series and films. Some of his notable credits in this area include voicing Phillip "Lip" Gallagher in Shameless, Brian Moser in later seasons of Dexter, and various characters in shows like The Haunting Hour: The Series and Big Time Rush. He has also dubbed roles in films such as Good Kids, Scary Movie 5, and Little Fish.