The "dust bunnies" or "soot sprites" first featured in My Neighbor Totoro as shy, slightly frightful creatures that live in abandoned buildings such as houses. They later reappeared in Spirited Away as workers in Kamaji's boiler room. They are small, black as soot and apparently fuzzy, with spherical bodies and two inquisitive eyes. They move by hovering around, but they can extend stick-like legs and arms from their bodies to do certain tasks, and can lift objects many times heavier than their own weight. They make a squeaky murmuring sound when excited, and dissolve into powder (soot) if crushed.

In My Neighbour Totoro, the house the main characters move into is full of Susuwatari, which are rationalized as Makkuro Kurosuke (pitch-black blackie), an optical illusion caused by moving quickly from light into darkness. Later, the family drives the Susuwatari out of the house, as the home that was once abandoned is now inhabited. They would move to another abandoned area.

In Spirited Away, the protagonist Sen (Chihiro) befriends a number of them by helping them carry coal. Sen is told that if these Susuwatari aren't given a job to do, they turn back into soot. Another character, Lin, feeds the Susuwatari much like farmers feed chickens, throwing handfuls of the Japanese candy Kompeito onto the ground for them to eat. 

On the way to their new home, 10-year-old Chihiro Ogino's family stumbles upon a deserted theme park. Intrigued, the family investigates the park, though unbeknownst to them, it is secretly inhabited by spirits who sleep by day and appear at night. When Chihiro's mother and father eat food from a restaurant in the street, angry spirits turn them into pigs. Furthermore, a wide sea has appeared between the spirit world and the human one, trapping Chihiro, the sole human, in a land of spirits. Luckily for her though, a mysterious boy named Haku appears, claiming to know her from the past. Under his instructions, Chihiro secures a job in the bathhouse where Haku works. With only her courage and some new found friends to aid her, Chihiro embarks on a journey to turn her parents back to their original forms and return home.


Follow the adventures of Satsuki and her four-year-old sister Mei when they move into a new home in the countryside. To their delight they discover that their new neighbor is a mysterious forest spirit called Totoro who can be seen only through the eyes of a child. Totoro introduces them to extraordinary characters, including a cat that doubles as a bus, takes them on a journey through the wonders of nature. 
(Source: Disney)

A short TV advertising spot featuring a small green pig with enormous eyes. 
The title Nandarou implies that even its creators didn't really know what kind of creature it was supposed to be. However, NTV (Nihon TV) chose it as their station's mascot. 
(Source: ANN, Nausicaa.net)

A hand drawn animated Star Wars short directed and animated by Katsuya Kondou (Studio Ghibli).

Makkuro-Kurosuke