Sebek is loud, hot-blooded, prideful, and often quite loud. Despite being half-human himself, he looks down on humans, seeing them as inferior to him. He's honest and blunt, and will respect even humans if they have impressive talents or skills. He greatly respects Malleus Draconia, often referring to him as "Young Master" and getting angry about any perceived insult towards him. He has incredible physical strength. He enjoys reading, and strives to become a knight worthy of protecting Malleus.