Frank Welker

Frank Welker (born March 12, 1946) is an American voice actor known for voicing a wide range of animals, including dinosaurs.

Biography
In 1984, Frank began doing testing for the then-upcoming Transformers show, designed to market the accompanying toys. In the series, he voiced the leader of the Decepticons, Megatron and his fellow Decepticons, Soundwave, Rumble and many others. After Transformers: The Movie came out and saw Megatron be reformatted as Galvatron, Frank replaced that of Leonard Nimoy, using his shouting and loud voice again to portray the character.

Transformers: Prime

 * Megatron
 * Soundwave
 * Insecticons
 * Terrorcon Cliffjumper ("Darkness Rising, Part 2")
 * Trooper ("Con Job")
 * Terrorcon Skyquake ("Shadowzone")
 * Truck Driver ("Legacy")
 * Trooper #1 ("Thirst")
 * Trooper #2 ("Hurt")
 * Unicron (while possessing Megatron in "Predacons Rising")
 * Bumblebee (pre-audio-enhanced dialogue)

Transformers: Prime - The Game

 * Megatron

Transformers: Robots in Disguise

 * Soundwave
 * Grimlock (roar sound effect only)

Transformers: Universe

 * Megatron