Raymond S. Fumihiko Tachiki (立木 文彦, Tachiki Fumihiko, born April 29, ) is a Japanese voice actor, live-action actor, and narrator. Patrick Seitz is the English dub voice of Sloth in Fullmetal Alchemist: Brotherhood, and Fumihiko Tachiki is the Japanese voice. Persi voices the character of Flash in Disney's Zootopia, the fastest sloth in the Dmv (Department of Mammal Vehicles), but he's no ordinary. . Persi voices the character of Flash in Disney's Zootopia, the fastest sloth in the Dmv (Department of Mammal Vehicles), but he's no ordinary voice actor.