Wraith roller

Wraith rollers are best known for their use by the Waterwraith and its related species as a method of transportation but may also be a standalone obstacle. They set idly on the ground, often in pairs, but roll down slopes they happen to be on, crushing anything caught under them as they are moving. Although always cylindrical and with a narrow cavity on the center of each side, wraith rollers are not always smooth, stone, or gray and may bear characteristics matching the rollers of their respective supernatura.

=In fanon games=

In Pikmin 2: New Year
Wraith rollers appear in Pikmin 2: New Year as obstacles that are always present in pairs and frequently block crucial passageways in some caves. Wraith rollers crush any Pikmin and leader that so much as touches them, and because they are indestructible, may be circumvented only by using a dose of ultra-bitter spray on them, temporarily rendering them harmless and allowing safe passage.

In Pikmin: Spark
Rollers are obstacles appearing in Pikmin: Spark. They take the form of a giant stone, crystal, or steel cylinders and are often bolted to the sides of walls. They appear in Rust Labyrinth as well as some challenge mode stages where they roll over conveyor belts crushing anything underneath them. They come in three types: Stone Rollers can be temporarily stopped by getting a metal object lodged into them, Crystal Rollers can be destroyed by explosions, and Metal Rollers are indestructible. Their powerful pressure can instantly kill all Pikmin, even Rock Pikmin, so be careful when around them.