Character is permanently semi-intangible; crushing, piercing, fire, cold and acid-based attacks will simply pass through him.
Ghostly characters have no strength at all, so it is useless to buy them strength levels or strength-enhancing attributes.
Note: Originally introduced in FFX 2.6.
Important: Due to FFX Control Centre having a limit on the number of customizable attributes, Ghostly has to be customized manually by opening ffxcustom2.py:
### Ghostly FFQ_GHOSTLY_CUSTOM=[ ["default","ffq_ghostly"], ["types","sDefence"], ]