Board Thread:Questions and Answers/@comment-95.96.81.129-20130616081400/@comment-1518158-20130616232559

Parts of the game take place inside Luigi's dreams, which is why there are so many Luigis. If the game took place in Mario's dreams, there would be a Dream Mario, but that is not the case. No one knows how much HP Antasma has; that'll be revealed when the game comes out and someone has played through it.