Liam O'Brien is an American voice actor, dubbing director, and dialogist who has done voice work for the English dub of the Sonic the Hedgehog series.
O'Brien grew up in Weehawken, New Jersey. His mother Lois Wiltse O'Brien worked as an educator and as a quality assurance trainer and consultant. He started getting into acting in high school. After attending New York University Tisch School of the Arts, he worked in theater on various productions around the country.
While working on a production of Romeo & Juliet in Cincinnati, he met Crispin Freeman, who helped him get into voice-over in cartoons and anime back in New York City.
- Naruto - Gaara
- Bleach - Jūshirō Ukitake
- Sailor Moon, Sailor Moon Crystal - Nephrite
- Monster - Kenzo Tenma
- World of Warcraft: The Burning Crusade - Illidan Stormrage
- Persona series - Akihiko Sanada
- Final Fantasy XIII-2 - Caius Ballad
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