David Matranga has been working as a voice artist for 12 years voicing over a 100 roles including Starship Troopers: Invasion, Halo Legends, Appleseed, Appleseed Ex Machina, Appleseed The Series, Saiyuki, Orphen, Le Chevalier D’Eon, Clannad, Gilgamesh, Colorful, 5 Centimeters Per Second, High School Of The Dead, and Super Milk Chan to name a few. His latest high profile role is Bertholdt Hoover in Attack on Titan.