Ponijao lives in Namibia with her family, including her parents and eight older brothers and sisters. Ponijao's family is part of the Himba tribe, and lives in a small village with other families.

Mari lives with her mother and father in Shibuya, a busy metropolitan area within Tokyo, at the center of all of the city's noise and excitement. Mari is an only child and lives a contemporary urban lifestyle.

Born in Mongolia, Bayarjargal, usually called "Bayar" for short, lives with his mother, father, and older brother Delgerjargal ("Degi") on their small family farm.

Hattie lives in San Francisco, born to very ecological, "green" parents.  Both of Hattie's parents are equally involved in her day-to-day life, fixing her meals, taking her to play groups, and spending time with her around the house.