Loyal companion and guide assisting Bastian in Fantasia.
They operate within the same quest group despite Nimbly's concealed allegiance.
Atreyu and Nimbly are both involved in guiding and protecting the boy during his journey through Fantasia.
Nimbly secretly advances Xayide's plan from inside the traveling group.
Nimbly was sent by Xayide to persuade the boy to make wishes until he forgot why he came to Fantasia.