Zeus

Zeus will battle Thor in Zeus vs Thor. It is unknown who he will be portrayed by.

Information on the Rapper
Zeus is god of the sky and thunder and is the king of Olympus, putting all other Greek gods at his command, with the exception of Hades and Poseidon. He rules with a lightning bolt. He is the father to a number of the Olympian gods, notably Dionysius, Apollo and Artemis.

Trivia

 * He is the first/second god to appear in a rap battle, alongside Thor.
 * If you count God, he would be the second/third.