The explorer is a rugged pilot who imparts survival skills and wisdom to the children after they find him living in the jungle. He assists the children in their journey towards Manaus and fosters their appreciation for the natural world.

Con is a sharp and initially brash character whose tough exterior hides a desire for friendship and freedom. Throughout the story, she transforms from distrustful and isolated to a loyal and adventurous member of the group.

Lila is Max’s protective older sister, known for her logical demeanor and extensive jungle knowledge, which aids the group’s survival. She takes care of her younger brother and eventually adopts a baby sloth named Abacaxi.

Max is the youngest member and brother to Lila, known for his vulnerability and reliance on the group but also his curiosity and observant nature. His adventurous spirit occasionally leads him into trouble, impacting the group's decisions.