The only thing they have that you don't have, is....

A man who traveled from an Earthlike world to the Land of Oz, and was hailed as a Wizard for his mastery of Science. In the original story, he returned to his world in the Hot Air Balloon he arrived in.

Unfortunately, this time it does not appear that is so. With the Hot-Air Balloon abandoned and The Joker masquerading as the Wizard, it is unknown exactly where the Wizard is, if he is alive at all.