See the image that says it all.
Zeke is a very egotistical and twisted individual who cares about having power and dominance. He wants to redefine what it means to be a god and is opposed to the rule of the Olympians. However, at times he has shown a more honorable and soft side but that is exceptionally rare.
When the age of the Olympians began with the ascension of Zeus to the Throne of Olympus, there was a close confidant and ally to the King of the Gods named Zeke, who was one of the most skilled swordsman to ever walked the Earth. Zeke had been Zeus's foremost ally in ensuring that the rule of the Olympians came about smoothly and with little dissent. During a feast with all of the Greek/Roman Gods in attendance, Zeke approached Zeus about the possibility of being elevated to walk among the Olympians. However, much to his surprise, Zeus told him that the other Olympians are very wary of his cocky and pretentious attitude and thus was swayed to deny any possibility of him being an Olympian. Zeke begrudgingly accepted the ruling, but the bitterness slowly turned into hate before corrupting his once noble heart.