God Serena

God Serena (ゴッドセレナ Goddo Serena) is currently one of the Shields of Spriggan 12, a group whose purpose is to protect the Emperor of the Alvarez Empire. He is a former member of the Ten Wizard Saints, and was ranked first in terms of strength of the Four Gods of Ishgar, making him the strongest Mage on the entire continent.

Appearance
Naka suot ug puti na sanina...

Alvarez Empire arc
God Serena is mentioned by Hyberion during a discussion in the Magic Council, revered as the strongest Mage of Ishgar, but stated to have defected a while ago to become a member of the Alvarez Empire's elite guard: the Spriggan 12; the other eleven members also have strength equal to his own.

Trivia

 * Serena is Half Human Half Fish