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Around the world, Sonnier (ソニア , Sonnier , 索尼尔) is a very rare epicene forename. The given name Sonnier is habitual in Japan, where it is a very rare feminine name, and Philippines, where it is a very rare masculine name. Much more prevalently, Sonnier is the last name as well as the forename.
Sonnier is also a popular name for the fictitious and mythical characters: Red Sonja , the fictional character; Sonja , the fictional character in the film series Underworld; Sonia Besirsky , the fictional character from Lindenstraße; Sonja Blue , the fictional human and Sonia Fowler , the fictional character from the British soap opera EastEnders, and in many other works.