Constantino Romero was a celebrated Spanish voice actor, presenter, and actor, recognized for his deep and resonant baritone voice. Born on May 29, 1947, in Albacete, Spain, and passing away on May 12, 2013, in Barcelona, he built a legendary career primarily known for dubbing international film stars like Clint Eastwood, Arnold Schwarzenegger, and James Earl Jones as Darth Vader into Spanish. However, his work in animation and specifically in anime left a lasting mark on Spanish audiences.

In the realm of anime, Romero is particularly remembered for his role as Zeus in the Franco-Japanese series Ulysses 31. This space-age reimagining of Homer's Odyssey was a staple of 1980s television in Spain, and his portrayal of the powerful, commanding god Zeus became iconic for viewers of that generation. Another key anime role was that of Count Brocken in the classic mecha series Mazinger Z, where his deep voice fittingly characterized the formidable antagonist.

Beyond his specific anime credits, Romero was a prolific voice in the Spanish dubs of the Disney animated canon. He is widely celebrated for his performances as the regal and tragic Mufasa in The Lion King, the villainous Judge Claude Frollo in The Hunchback of Notre Dame, and the Supreme Ancestor in Mulan. These roles, while not anime, showcase the same vocal gravitas and versatility he brought to Japanese animation.

His voice was his signature, often described as a badass baritone that could convey both intimidating authority and gentle wisdom. This allowed him to avoid typecasting and perform a range of characters, from villains to paternal figures. Throughout his career, he was a consistent presence in Spanish media, also working extensively in television as a presenter on popular programs and as a stage actor. His legacy endures as one of the most beloved and respected voices in the history of Spanish dubbing.