Marcos Abadi is an Argentine professional actor, voice actor, and radio announcer based in Argentina, known for his extensive work dubbing anime, films, and television series into Latin American Spanish. He is the son of Ariel Abadi, a fellow actor and voice director. Abadi is a graduate of the ETER - Escuela de Comunicación and has also worked as the station announcer for radio AM 750.

In the realm of anime, Abadi has provided voices for a wide variety of characters. He is notably the voice of Inuyasha in the Argentine dub of the series Yashahime: Princess Half-Demon. He also took on the role of Inspector Lestrade in Lupin the 3rd Part 6 and voiced the character Dan in the Star Wars: Visions episode The Elder. His film work includes voicing Nathaniel Adams in Yo-kai Watch: The Movie, Raiko Minamoto in Legend of the Millennium Dragon, and Hermano Dusk in Tekkonkinkreet. He has also contributed to the Pokémon franchise, voicing Brock in the films Pokémon: Jirachi Wish Maker and Pokémon: Destiny Deoxys. Additional anime credits include Richard Miyanoshita in Ghost Stories, Doug Horvat in Last Hope, and Vulkay in Heroes Legend of Battle Disks.

Beyond anime, Abadi's voice acting career encompasses a broad spectrum of roles. He is recognized for being the Spanish voice of characters such as Columbus in Zombieland, Zeke Baylor in the High School Musical trilogy, Walter White Jr. in Breaking Bad, and Power Man in Ultimate Spider-Man. He has also voiced characters in popular animated series like Gravity Falls and Bob's Burgers. In video games, his work includes providing the Latin American Spanish voice for Deag Loric in Doom: The Dark Ages.