It is unclear what characters Clarke and Andersen will portray. However, according to a Chicago Tribune report last November, the open casting call description included two characters, named Rachel and Thomas. Rachel was described as "street smart, independent, athletic, natural beauty" while Thomas has "grown up without a father's influence. Without the model of being a man, he doesn't have the strongest sense of himself."

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Clarke's feature film credits include the upcoming title The Moon and the Sun, a fantasy film directed by Sean McNamara that lists Pierce Brosnan and William Hurt as stars. Andersen, meanwhile, does not have any feature film credits listed although he appeared in MTV's Ultimate Parkour Challenge and in a commercial for Spider-Man.

The film's planned two-week August hiatus was due to the injury sustained by Harrison Ford on set, the announcement said. A source had told The Hollywood Reporter on June 12 that the actor sustained an ankle injury from the door of the Millennium Falcon. He was hospitalized for the injury.

"The Star Wars universe has always been about discovering and nurturing young talent and in casting Episode VII we wanted to remain absolutely faithful to this tradition. We are delighted that so many travelled to see us at the open casting calls and that we have been able to make Crystal and Pip a part of the film," said Lucasfilm president Kathleen Kennedy in the Sunday casting statement.