Nathen was Jing Kanno's best friend, but he hasn't shown up for school this year. Theories of his disappearance include being eaten by a Grenderthaal, becoming a Magic Space Duck, being in a magical sleep, being kidnapped by pirates, being kidnapped by ninjas, joining a circus, eating a hectarine, turning into a newt, melting in the sunlight, and not being gone at all, but just hiding really well. Boone uses Nathen's absence as proof that the Vent Troll exists.