Колин Стинтон
В роли: Self - Narrator (голос)

George Bell
В роли: Self - Pituitary Giant

Donald W. Richardson
В роли: Self - Associate Professor of Medicine, Eastern Virginia Medical School (как Dr. Donald W. Richardson)

Dennis Styne
В роли: Self - Professor of Pediatrics, UC David Medical Center (как Dr. Dennis Styne)

Robert Wadlow
В роли: Self - Tallest Person Who Ever Lived (хроника)

Sandra Elaine Allen
В роли: Self - World's Tallest Woman (хроника)

David Rasmussen
В роли: Self - Genetic Giant

Roy Hibbert
В роли: Self - Pro Basketball Player

Richmond Edwards
В роли: Self - Familial Giant

Ayanna Edwards
В роли: Self - Richmond's Daughter

Drew Bremer
В роли: Self - Assistant Professor of Pediatrics, UC Daviis Children's Hospital