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Worldwide, Cullen (Cullen , カレン , كولين , and others...) is quite a common largely masculine, but uncommonly female first name. The given name Cullen is habitual in the United States, where it is quite a rare boy's name, Ireland, where it is a rare boy's name, and Japan, where it is a rare female name. Not in comparison with a country's population, it is the most numerous in the United States, Japan, and China. More frequently, Cullen is the last name as well as the forename.
Cullen is also a prevalent name for the fictitious and mythical characters: Power Girl , the fictional character, Injustice 2; Karen Plankton , the fictional character in SpongeBob SquarePants; Cullen Bloodstone , the comics character; Karen Page , the fictional character in Marvel Comics, Daredevil and Cullen Francis , the fictional character appearing in the movie « Une histoire à faire peur », The Good Lie, and in many other works.