Gray Haddock is an American actor and producer recognized for his extensive work in English-language dubs of Japanese anime and his later creative leadership at the production company Rooster Teeth. His career in voice acting began in the mid-1990s and continued for over two decades, during which he portrayed a wide variety of characters in numerous series and films.

Haddock's voice acting portfolio is primarily composed of roles in anime dubbed by ADV Films and other studios based in Texas. One of his earliest and most recurring roles was that of the character Sanosuke Sagara in the Rurouni Kenshin franchise, a part he first played in the 1997 film Rurouni Kenshin: Requiem for the Ishin Patriots and reprised in later installments such as Rurouni Kenshin: Reflection and the New Kyoto Arc films. He also voiced Lei Wulong in Tekken: The Motion Picture in 1998 and Yousuke Fuuma in the Wedding Peach television series.

His credits from the mid-2000s include several of the specific roles noted. He provided the voice of the character James in the 2006 science fiction series Project Blue Earth SOS. In the same period, he voiced the powerful villain Archanfel in the series Guyver: The Bioboosted Armor. He also took on the role of the secret agent Loki in the series 009-1 and portrayed Ukon Tanaka in Moeyo Ken. Other notable anime roles from this era include Oreldo in Pumpkin Scissors, Rando in Lost Universe, and Postino in Jing: King of Bandits.

In 2011, Haddock joined Rooster Teeth as a visual effects artist, which marked a significant shift in his career. While continuing to voice act, he became more involved in production. He is well known to Rooster Teeth audiences for his voice roles as the villain Roman Torchwick in the animated series RWBY and as the character Locus in Red vs. Blue. He served as the head of Rooster Teeth Animation for several years, during which he was a producer and director for RWBY and created, wrote, and directed the mecha series Gen:Lock, in which he also voiced the character Leon August. His later voice work also included the role of Spinister in the Transformers: War for Cybertron Trilogy animated series.