The Voice of Megatron: Frank Welker’s Evolution Across Transformers Frank Welker, the legendary voice actor behind Megatron, has shaped the Decepticon leader's iconic voice across generations. From the commanding tone in Transformers G1 to the darker, more menacing presence in Transformers Prime, Welker’s range showcases his mastery in bringing characters to life. While the live-action movies offered a modern twist, Welker’s return in later films reminded fans why his portrayal remains unmatched