Rupert Isaacson is the inventive influence behind Horse Boy; Rowan is his mentor, teacher, and muse. He is a journalist for the British and American press since the early 1990s. Rupert also published several guidebooks to India and Africa. He is the author of three non-fictional memoirs: The Healing Land, which tells the story of his family in Africa, and of his own time spent living with the Bushmen of the Kalahari Desert; The Long Ride Home, which tells of the three subsequent healing journeys he and his son made to Africa, Australia, and the Navajo Reservation, as well as his discovery of how horses can help autism and special needs in general and The Horse Boy, which tells the story of his journey across Mongolia on horseback with his autistic son Rowan.

He is a successful documentary filmmaker of The Horse Boy and Endangers. He is the writer and conceiver of reality TV shows (The Quest – which aired on ABC in 2014 – was his original concept he helped produce the show), and in addition, his mainstream Hollywood projects include The Horse Boy feature film and The Goth Lords.

Rupert also runs the Horse Boy Foundation from his New Trails ranch, which offers services to autism families and helps direct several satellite centers offering similar services in North America and Europe.

In 2004, he found the Indigenous Land Rights Fund. It helps hunt and gather tribes to gain legal title to their inherited territory were helped the Bushmen of Botswana win the land claim in African history in 2006. Rupert relaxes by planting trees, drinking wine and beer, and reading historical novels.