Queen Mab

Mab is the ruler of the Fey Wild of Arborea. In her natural plane she holds court with animal spirits called the Beast Council. She loves games, and her moods can shift like the winds. She hates mechanical and undead things. Morrigan is the patron of many fey creatures like eladrin, satyrs, nature spirits, fairies, changelings, and gnomes. Along with her Beast Council, she also rules the fairy realm with the assistance of the Court of Stars, a collection of arch fey associated with seasons and nature spirits.
Queen Mab is believed to have crossed over into Andorra as her fey people did during the Sundering. Scholars are unsure whether she exists in the world tangibly or merely holds influence, but the latter at least is confirmed as true. What this means for the Nine, the native gods of the lands, no one knows.
It is said Queen Mab can appear in various different mortal disquises. She can appear any age, and often will appear as an old witch or a lost little girl to measure strangers intentions.