Ghost (死霊) is an enemy from Alex Kidd in Miracle World.
Ghosts appear as cloaked figures holding a wand. They pop out of certain interrogation boxes when these are destroyed and begin chasing the player. They are indestructible, so all the player can do is run away from them when they appear.
If the player manages to successfully escape from a Ghost the next interrogation box will always contain a 1UP. Because of this it is often useful to trigger a Ghost's appearance.