Ghost Wolf is one of the seven children of Bigby and Snow White. Unlike the rest of his siblings, he was born a zephyr, meaning that he is invisible and unknown to everyone except his family and a few others. 

His birth unknown to everyone, he unintentionally caused a series of murders in Fabletown and the Farm, by taking their air out. Eventually he managed to find his way back to his mother. The mother and son shared an emotional but brief reunion as she was forced to urge him to flee out of fear of being discovered and then killed by his grandfather, the North Wind

She urged him to go and find his father Bigby. 

He eventually managed to find his father and stayed with him during his exile. He aided his father during his mission into the Homelands. When his father reunited with Snow White, he shared a happy reunion with his mother. 

Series FablesFairestJack of FablesCinderella: From Fabletown with LoveCinderella: Fables Are Forever1001 Nights of SnowfallThe Unwritten FablesThe LiteralsFables: Werewolves of the HeartlandFables: The Wolf Among UsEverafter: From the Pages of Fables
Characters Bigby WolfSnow WhiteRose RedPrince CharmingBeautyBeastBoy BlueFlycatcherKing ColeFrau TotenkinderGeppettoThe Snow QueenNorth WindJack Horner
Video Games The Wolf Among UsThe Wolf Among Us: Season 2