Gray G. Haddock, also known as Gray G. Haddock, is an American voice actor and producer recognized for his extensive work in English dubs of anime and web series. Born on August 11, 1972, in Austin, Texas, he began his voice acting career in 1995 after graduating from the University of Texas at Austin. His early work was primarily in English adaptations of Japanese anime, contributing to numerous titles throughout the late 1990s and 2000s.

Among his notable early roles is Lei Wulong in the 1998 animated film Tekken: The Motion Picture. Based on the popular fighting game franchise, the film features Haddock providing the English voice for the Hong Kong detective character. Another significant role from this period is Jubei Yagyu in the 1997-1998 anime mini-series Ninja Resurrection. He voiced the legendary swordsman in the English adaptation of this two-episode OVA.

Haddock's career includes a long-running association with the Rurouni Kenshin franchise. He first voiced the character Sanosuke Sagara in the 1997 film Rurouni Kenshin: Requiem for the Ishin Patriots. He would reprise this role multiple times over more than a decade, including in the 2001 series Rurouni Kenshin: Reflection and the two-part Rurouni Kenshin: New Kyoto Arc in 2011 and 2012. His other voice credits from this era include Yousuke Fuuma in Wedding Peach, Oreldo in Pumpkin Scissors, Archanfel in Guyver: The Bioboosted Armor, and roles in Lost Universe, Steam Detectives, and Jing: King of Bandits.

In 2011, Haddock joined the Austin-based production company Rooster Teeth as a visual effects artist, which marked a significant shift in his career. He quickly became a central figure in the company's animation department. He took on the voice role of Roman Torchwick in the hit web series RWBY starting in 2013 and also voiced Locus in the long-running series Red vs. Blue. Beyond voice acting, Haddock moved into production roles, becoming a producer on RWBY in 2014 and later a co-director. In September 2014, he was appointed the head of the newly formed Rooster Teeth Animation department. In 2018, he created, wrote, and directed the mecha web series Gen:Lock, in which he also provided a voice.

Haddock's tenure at Rooster Teeth continued until 2019. Following his departure from the company, he has continued to work in voice acting, with credits including the role of Spinister in the 2020 Netflix animated series Transformers: War for Cybertron Trilogy. Throughout his career, Haddock has been credited under variations of his name, including Gary G. Haddock and Gray C. Haddock.