Akihiko Hirata (born as "Akihiko Onoda" on December 26, 1927 in Seoul, Korea; passed away July 25, 1984 in Tokyo, Japan) was a Japanese actor who often appeared in Toho Company Ltd.'s various Kaiju films. Hirata starred in many non-Kaiju films including Hiroshi Inagaki's Samurai trilogy as well. His most famous role to date was Daisuke Serizawa the scientist who created the device called the Oxygen Destroyer that killed Godzilla in the 1954 original Gojira, (archive footage of this character later appeared in *Godzilla vs. Destoroyah (1995) and Godzilla Against MechaGodzilla (2002) ). His other appearances in Kaiju films, where he portrayed various different characters other than his famous scientist role were Rodan, The Mysterians, The H-Man, Varan the Unbelievable, The Secret of the Telegian, Mothra (1961), Gorath (1962), King Kong vs. Godzilla, Atragon, Ghidorah, the Three-Headed Monster, Experiment 213's Godzilla vs. the Sea Monster, Son of Godzilla and Godzilla vs. MechaGodzilla, Terror of MechaGodzilla.
Hirata was also originally slated to appear in the 1984 Japanese revival of Godzilla entitled The Return of Godzilla (redistributed and reedited in the United States as Godzilla 1985) but was unable to due to dying from long-term lung cancer at the age of 56.