Shape

Shapes are like clothes worn by ghosts. They materialise depending on the death image that the ghost thinks of and the cause of death.

A knife stuck to a shape means that the ghost has a grudge, possibly due to the death being caused by someone intentionally (i.e. murdered).

As shapes are mental projections, they can be caused to go through transformation by the owner's thoughts.

Shapes can also be made to undergo Great Transformation which give the ghost extra features on their body. It's a transformation which uses up more than 90% of your dark power, and it's also known as the "full power transformation". Most ghosts cannot use this skill because they have lingering attachments to life.

In addition, a ghost can cause External Transformation (外變形) which materialise objects separate from their body such as shields.