Emperor-Beyond-The-Sea

The Emperor-Over-the-Sea was the father of Aslan, the Great Lion. The Emperor-over-the-sea was a methaphorical representation of God, being the father of the savior, Aslan.

Trivia
The Emperor-Over-the-Sea was meant to be the father of the messiah of Narnia and is never seen in any of the books, just briefly mentioned.