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Worldwide, Joi (Joi , 乔伊 , ジョイ ) is quite a common epicene first name. The first name Joi is characteristic of Barbados, where it is quite a rare girly name, the United States, and Qatar. Not in comparison with a country's population, it is commonest in the United States, India, and Indonesia. Very seldom, Joi is the last name as well as the forename.
Joi is also a popular name for the fictitious and mythical characters: Joey Lucas , the character in The West Wing; Tar Pit , the fictional DC supervillain; Joey Potter , the fictional character, Dawson's Creek; Joy Meachum , the fictional character appearing in American comic books published by Marvel Comics, Marvel Premiere and Joey Zasa , the fictional character from The Godfather series, and in many other works.