Gary A. Hecker
Gary Allan Hecker provided vocal effects for Doomsday in Batman v Superman: Dawn of Justice and the Parademons in Justice League and Zack Snyder's Justice League.
He was also a foley artist in Watchmen and Teen Titans GO! To the Movies and a supervising foley artist in RED, Man of Steel, Justice League and Zack Snyder's Justice League.
External links[]
Gary A. Hecker on the Marvel Movies Wiki