They take on the form of young children with a small stature. They wear a yellow raincoat and carry a yellow umbrella. They are likely wearing a randoseru （ランドセル),  a type of backpack commonly used by Japanese elementary school children, under their coat. The symbol on its back is a children crossing sign.

They cannot attack, but if they detect a threat, they will alert other Visitors into the area as long as they remain alive.