User blog comment:OverlordRocks/How did the Ninja fight the Ghosts?/@comment-27747281-20160314230224

The Ghosts have shown the ability to be able to make their bodies momentarily solid in order to hit their opponents, which in itself is not only one of their greater strengths, but also weaknesses, as enemies can use this chance to surprise and fight back before they can turn intangible once more.