Morpheus

Morpheus's strength was at the Legendary Pinnacle level, and some said he had even had a glimpse of the secrets of the gods. In the game, in order to ignite the Godly Fire, Morpheus joined the God of Darkness, making the Syndicate a cancerous organization associated with the Dark Side.

And because of that, Morpheus became the first final boss in the game. That year, Link had been in a group that was defeated by this boss.

Trivia

 * he was always making sacrifices to the demon god.