Nix Parthe is a young, energetic vampire who serves as a knight in Ferid Bathory’s retinue in Seraph of the End. Bubbly and excitable on the surface, he frequently blurts out enthusiastic declarations and overly formal greetings, trying hard to earn his master’s favor. Despite his outward cheerfulness, Nix harbors deep insecurities about his worth and constantly strives to prove himself in battle. He's loyal to a fault—eager to spring into action and defend his comrades, though sometimes lacking tactical foresight. Ultimately, his sincere heart and relentless spirit make him a compelling and sympathetic presence among the otherwise cold and calculating vampire nobility.