Cataclysmic monster: Ognar

The chaoziens are known for being one of the most chaotic species, and they hate the humanity. However, looks like one of them isn't the same, and it's Ragnarok. When he was young, he always wanted to visit the world, if not his big brother Ognar, who always refused to help him. As Ragnarok grew up, he visited to the new world whitout his brother noticing, but unfortunately, Ognar knew everything about that. He went crazy and decided to take back his brother, and he SHOULD do that. He tried to make an invasion of titan long time ago, but he failed. So, he should come to the world and find his brother.