When the ghost imitator is injured or killed, civil liability will arise. According to Article 1 173 of the Civil Law, if the infringed is at fault for the occurrence or expansion of the same damage, the liability of the infringer may be reduced. The ghost impersonator is at fault for being injured, so the ghost impersonator can reduce the liability for compensation.
If you know that the other person has high blood pressure or heart disease and scare others, causing death or injury, you may be suspected of intentional injury or intentional homicide. Of course, if you don't know that the other person has this disease, causing death or injury, you will still be suspected of causing serious injury or death through negligence.