The character of Harold was rewritten to have a Nigerian background after David Oyelowo was cast. Oyelowo pitched director Nash Edgerton on the earnest naivety that such a character could bring.
Director Nash Edgerton is the brother of star Joel Edgerton.
The language spoken by Harold Soyinka in the movie is the Yoruba language from Nigeria.
Amanda Seyfried asked David Oyelowo about his accent during filming and stated that she had an encounter once with a Nigerian prince. Oyelowo is a Nigerian yoruba prince.
The director Nash Edgerton of this movie has been a stuntman for many decades in movies like Star Wars, Mission Impossible and The Matrix. He also worked as a stuntman in the latest Quentin Tarantino movie Once upon a time in Hollywood. Nash Edgerton has also been the go-to director for many of the latest Bob Dylan music videos.