Zoso

Zoso (also known as the Dark One) is a terrifying entity with unmatched magical powers.

Desperate Souls
While under control of the head knight. The knight uses his powers to force parents to send their kids off to The Ogre Wars. He later disguises himself as a poor beggar and meets Rumpelstiltskin, who he earlier used his powers to punish him for talking back to the knight. Rumpelstiltskin later kills the Dark One and learns that he was the beggar.

Trivia

 * Meets Rumpelstiltskin while disguised as a beggar.
 * Killed by Rumpelstiltskin, who becomes the next Dark One.
 * Name is a possible homage to the moniker for guitarist Jimmy Page of Led Zepplin.