Cloud

From Zelda Wiki.org

Cloud
Game(s)	A Link to the Past
Habitat(s)	Thieves' Town
Effective Weapons	Sword

Clouds are corrupted versions of Anti-Fairies. They do not reduce magic power but are still a nuisance nonetheless. It is best to just avoid Clouds because of their mysterious powers. Both parts of a cloud are able to hurt Link, but only the smaller, less transparent part can be attacked.