Sergio Rodríguez Ortiz is a Spanish voice actor based in Barcelona, primarily known for his work in dubbing foreign productions into the Spanish language. He is professionally active and possesses a mid-range voice suitable for characters and individuals estimated to be between 20 and 50 years old. His professional aptitudes include dubbing, animation, commercial voice-over, and narration.

He is most notably recognized for providing the Spanish voice for the character Ren Amaki, the Sword Hero, in the anime series The Rising of The Shield Hero. His work on this series has spanned multiple seasons, including the first season in 2022, the second season in 2024, and the fourth season in 2025. Ren Amaki is depicted as one of the four Cardinal Heroes summoned to another world, characterized as a stoic but skilled gamer who initially struggles to adapt to the reality of his new environment.

Beyond this prominent anime role, Rodríguez Ortiz has built a diverse career dubbing voices for live-action television series and films. His credits include roles in acclaimed series such as Homeland, The Blacklist, Barry, The Deuce, and Silicon Valley. He has also contributed voices to a wide range of films, including Detroit, The Big Short, and Bumblebee, in addition to numerous projects where he performed voice work for additional, unnamed characters.