Marcos Martín was an artist for Guidebook to the Marvel Cinematic Universe - Iron Man 3, Guidebook to the Marvel Cinematic Universe - Thor: The Dark World, Guidebook to the Marvel Cinematic Universe - Ant-Man, Guidebook to the Marvel Cinematic Universe - Marvel's Agents of S.H.I.E.L.D. Season Two, Guidebook to the Marvel Cinematic Universe - Marvel's Agent Carter Season One, Guidebook to the Marvel Cinematic Universe - Doctor Strange and Guidebook to the Marvel Cinematic Universe - Avengers Initiative.
He drew the poster for the Agents of S.H.I.E.L.D. episode Who You Really Are.
