Ultra Q
Although "Ultraman" is the first series to feature an Ultraman character, it is the second installment in the Ultra Series, following "Ultra Q". This is signified in the Japanese show opening by the "Ultra Q" logo exploding into the "Ultraman" logo. "Ultraman" and its titular hero became a major pop culture phenomenon in Japan, generating dozens of sequels, spin-offs, imitations, parodies and tributes. Ultraman went on to generate in merchandising revenue from 1966 to 1987 (equivalent to more than adjusted for inflation) and become the world's third top-selling licensed character by the 1980s, largely due to his popularity in Asia.