Evil Guy

The Dark Magician is an evil being that appeared in the episode The Enchiridion. He placed two final challenges for Finn, being destroyed in the process. He told Finn to come with him to his "brain world", where Finn was to fight the Heart Beast and the Ant. When Finn escapes from its "brain world", he then kicks Reaper in its chest. It seems to completely evaporate into a cloud of red smoke that rises from its cloak.

Appearence
The Magician's appearance is that of a scytheless reaper, with glowing red eyes and sharp teeth. It has a tattered, gray cloak with a green substance, possibly moss, hanging from it. It also has pale and bony hands. Also a straight shot at his "nads" will kill him.

Rivals

 * Finn
 * heroes that have possibly fallen to him before