Thread:Moose513/@comment-25372003-20160520200158/@comment-25600892-20160520222136

Well, I was thinking that maybe they hypnotized the guards into guarding the inside of their lair as the ghosts of Ulysses S. Grant and Theodore Roosevelt.

In case you're not familiar, here they are:
 * Grant: http://scoobydoo.wikia.com/wiki/Ghost_of_Ulysses_S._Grant
 * Roosevelt: http://scoobydoo.wikia.com/wiki/Ghost_of_Theodore_Roosevelt