Lan's older sister, who deals with depression after losing a promising singing career due to the evacuation from Earth. Her character focuses on emotional resilience and personal growth.

An Ororo who excels in STEM and helps Lan with technical problems. Marf represents intelligence and the difficulty of forming friendships due to being different.

A Krik and Marf's friend, known for being unusually polite for his species. He seeks positive company and becomes part of Lan's circle of friends.

Lan's mother, a diplomat and leader on Mars, who works to convince the Zhuri to accept humans on Choom. Her character highlights diplomacy and leadership.

Lan's father and a scientist who contributes to a food substitute project on Mars. His role includes experiencing scapegoating amidst tensions.

Lan's best friend, who collaborates on creative projects and supports Lan during their mission. Her character underscores dedication and encouragement.

A representative of the Zhuri government’s Immigration Division who interacts closely with Lan's family. He learns and challenges preconceived notions about humans.

A Zhuri who befriends Lan and Ila, stands out for his openness to emotions and humor. He represents an alternative perspective within Zhuri society.

A Zhuri who is skeptical of humans and steadfast in his beliefs against them. Hooree embodies the impact of misinformation.

Appears early in the story and exemplifies the consequences of denying scientific realities by returning to a devastated Earth. His tale serves as a caution about ignoring facts.