emperor hirohito
Hirohito (1901–1989), also called by his posthumous title Emperor Shōwa/Shouwa, was a Japanese emperor, whose reign (1926–1989) is known as Shōwa period/era.
He is known for being the Head of State of the Empire of Japan in World War II era, his interest in marine biology and his signature phrase, "Ah, so" (あっそう, "I see").