El nuberu is described as small, dark skinned, with big ears and bright eyes. He wears furs, a large hat and a cloak. In northern Spain, but specially in Asturias, he is a spirit of the wind, a "Lord of Tempest". He acts depending on how he is treated. If farmers are good to him, he will send that rain which helps the crops to grow strong and abundant. But if he believes he is badly treated, he becomes vindictive and sends ice, heavy, destructive rain and storms. To those he particularly hates, he sends a rain of frogs.