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Across the world, 穆 (Mu , 穆 , Mù ) is a widespread primarily male, but very seldom feminine first name. The first name 穆 is habitual in Mongolia, where it is a common largely masculine, but uncommonly female name, India, where it is quite a common primarily male, but very seldom female name, and Oman, where it is quite a rare largely boy's, but uncommonly female name. In absolute terms, it is commonest in India, Nigeria, and Indonesia. Likewise, 穆 is the last name as well as the forename.
穆 is also a name for the fictitious and mythical characters: Mu Guiying , the fictional character, wife of Yang Zongbao, The Generals of the Yang Family; Mu La Flaga , the fictional character from Mobile Suit Gundam SEED; Mu Pho , the fictional Teenage Mutant Ninja Turtles character, The Good, the Bad and the Tattooed; Mu Jianping , the fictional character from The Deer and the Cauldron and Mu Wanqing , character in Demi-Gods and Semi-Devils.