Nigel, born in Scotland, is (presumably) the only child of Radcliffe and Cordelia Thornberry. He travels around the world with his family making wildlife documentaries. He resembles David Attenborough, and speaks with an RP British accent. He somewhat resembles Lt. Col. Algernon Hawthorne in It's a Mad, Mad, Mad, Mad World, played by Terry-Thomas. He is easily enthused and usually remains cheery, even in the face of danger. He was offered a professorship at Oxford University but, much to his mother's disapproval, Nigel turned it down.