Seizō Katō (加藤 精三, Katō Seizō; February 14, 1927 – January 17, 2014) was a Japanese actor, voice actor and narrator who worked for Haikyo (Tokyo Actor's Consumer's Cooperative Society).
Kato was born in Tokyo. He was noted for his role as Megatron and Galvatron from the 1st Transformers series until Transformers: The Headmasters. He also did the ADR for Takeshi Katō's character in Akira Kurosawa's Ran after the original actor had become injured.
He died of bladder cancer at a hospital in Itabashi, Tokyo on January 17, 2014 at age 86.
Description above from the Wikipedia article Seizō Katō, licensed under CC-BY-SA, full list of contributors on Wikipedia.
Detective Conan: Love Story at Police Headquarters ~Wedding Eve~ (2022)
as Kiyonaga Matsumoto (voice)
Ultraman Mebius Side Story: Ghost Rebirth - STAGE II: The Emperor's Resurrection (2009)
as Armored Mefilas (voice)
Ultraman Mebius Side Story: Ghost Rebirth - STAGE I: The Graveyard of Darkness (2009)
as Armored Mefilas (voice)
Crayon Shin-chan: The Hidden Treasure of the Buri Buri Kingdom (1994)
as BuriBuri Majin (voice)
Doraemon: The Record of Nobita's Parallel Journey to the West (1988)
as Silver Horned King (voice)
Dengeki Sentai Changeman: Shuttle Base! The Critical Moment! (1985)
as Star King Bazoo (voice)