Zoros are enemies that appear in A Link to the Past.
Zoros look like tiny unshaped black dust with eyes. After Link blows certain cracked walls using a Bomb, a group of Zoros come out from the opening and move straight downward from the newly opened doorway in an effort to attack Link by running into him. Zoros disappear when they hit a wall or obstacle, but they will be replaced by a newly emerging group.
They are relatively weak and they won't cause too much damage to Link. They can be defeated with a single sword strike from the Master Sword. Beware of a newly emerging group of Zoros while attempting to pass through an opening. This enemy can be found in some of the later dungeons within the Dark World, including Misery Mire and Turtle Rock.
Zoro Sprite from A Link to the Past