Geoff Ramsey

Geoffrey Lazer Ramsey , is an American voice actor and comedian. He cofounded the production company Rooster Teeth in 2003 and is best known for voicing Dexter Grif in the longrunning web series Red vs. Blue. He also cofounded Achievement Hunter, a video gaming division of Rooster Teeth. Additionally, he costarred in the first season of animated web series XRay and Vav and currently costars in the biweekly reality series Happy Hour alongside his wife Griffon Ramsey, and friend Gavin Free.

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Source: Wikipedia