15 years old. She has brown bobbed hair with a red headband, wears goggles around her neck, and is clad in a mage's robe. A genius but sharp-tongued and short-tempered. She is deeply compassionate and will forget to eat or sleep when immersed in research or helping her friends. Concerned about Guest's unknown power, she forcefully drags them along for both protection and investigation. Her catchphrase is "That's just stupid."

28 years old. He has well-groomed blond hair, cold blue eyes, and wears the formal uniform of an Imperial noble investigator. While his manner is polite, he possesses a ruthlessness that stops at nothing to achieve his goals. He despises his brother Cumore while remaining obsessed with the pride of his family. He targets Guest as a source of new energy and pursues them relentlessly.