Hedorah, also known as the Smog Monster, is a kaiju monster who first appeared in Toho's 1971 film Godzilla vs. Hedorah. The monster was named for Hedoro, the Japanese word for sludge, slime, vomit or chemical ooze.
Set in the 1500s, the story recounts a lost voyage of Sir Francis Drake in which the English explorer and his crew encounters Godzilla and other kaiju on the high seas.
