Frank Welker (born on March 12, 1946) is a veteran American actor, who specializes in voice acting. He is known throughout the industry for his talent in this regard, and has provided animal sound effects and voices for many animals and characters. He is, perhaps, most well-known for playing Megatron in the original Transformers cartoon series. He does the gutteral and roaring vocal effects for Goro and voices Shao Kahn in the film Mortal Kombat.