In Warcraft III : Reign of Chaos , he voiced Mannoroth and Grom Hellscream in 2002 , and later in World of Warcraft : Cataclysm he reprised his role as Mannoroth .
Burghardt played a commando in the early - 1990s video game Night Trap .
In Warcraft III : Reign of Chaos , Burghardt voiced Mannoroth and Grom Hellscream in 2002 , and later in World of Warcraft : Cataclysm Burghardt reprised Burghardt 's role as Mannoroth .
Burghardt played a commando in the early - 1990s video game Night Trap .