No one really knows how Imaginary Friends are created. They are neither a result of science or magic, but some kind of strange force in between we will refer to as Imaginary Energy. All we know is that once someone dreams of a friend, he becomes real. Imaginary Energy is the only force that proves effective against Fuse and his minions. So much in fact, that Fusions based on Imaginary Friends, such as Fusion Eduardo and Fusion Coco, end up helping the heroes recover stolen items and finding Fusion lairs as a result of being partially made up of Imaginary Energy.