Galvatron is the name of several fictional Transformers, most often the recreated version of Megatron, the Decepticon leader. He was voiced by Leonard Nimoy in the 1986 Transformers movie, and then by Frank Welker in season 3 and 4 of the animated television series. Since then, other Transformers characters have shared the name Galvatron. Most unique among the characters named Galvatron was the main villain of the anime series Beast Wars Second, who was not a former Megatron, but instead a unrelated Predacon who named himself after the original Galvatron.

Above bio uses material from the Wikipedia article "Galvatron", released under the CC-BY-SA License 3.0.