Information about the voice actor Daniel Oliver is limited and primarily identifies him as working in Spanish-language dubbing for anime. He is not to be confused with other voice actors such as Daniel Van Thomas, who performs in English productions.

Daniel Oliver is known for his work on several major anime series, providing the Spanish dub voice for notable characters. He is the Spanish voice of Reinhard Van Astrea in the series Re:ZERO -Starting Life in Another World-. He also provides the Spanish voice for the popular character Rohan Kishibe in JoJo's Bizarre Adventure: Diamond Is Unbreakable.

His other Spanish dub voice credits include the role of Cyborg 008/Pyunma in the film Cyborg 009 Call of Justice and the role of Shara in the series Drifters. Specific details about his career background, training, or other professional achievements are not available.