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Throughout the world, 古斯特 (Guste , 古斯特 ) is a rare dominantly male, but infrequently feminine forename. The first name 古斯特 is habitual in Lithuania, where it is quite a rare female name, the Democratic Republic of the Congo, where it is a rare boy's name, and Germany, where it is a very rare girly name. Likewise, 古斯特 is the last name as well as the forename.
古斯特 is also a name for the fictitious and mythical characters: Guste Köster , the fictional character from The Tin Drum by Günter Grass.