Zagato

Zagato was the older brother of Lantis, alongside whom he was trained by Master Mage Clef. After becoming the High Priest of Cephiro, Zagato fell in love with Princess Emeraude, the Pillar of Cephiro. Emeraude, knowing that the Pillar could not love anything other than Cephiro, was so upset by her lack of will that she imprisoned herself in the water dungeon to avoid seeing Zagato (Note: The anime differs in that Zagato did abduct and imprison Emeraude in order to protect her and prevent her from summoning the Magic Knights, without success). Zagato does not reveal this to the Magic Knights or Cephiro's people, aiming to destroy the Knights when they come after him and in turn, making everyone think and letting them believe he was a true villain. Only Emeraude and Clef (and in the anime, Inouva) knew of his true intentions from the start.