Jenna Coleman
Jenna-Louise Coleman (born 27 April 1986) played at least three different versions of companion in Doctor Who, Clara Oswin Oswald, namely Oswin Oswald, Victorian Clara Oswin Oswald and modern Clara Oswald.
Miss Coleman is best known for portraying Jasmine Thomas in Emmerdale and has also appeared in Waterloo Road as Lindsay James, the Marvel feature film Captain America: The First Avenger as Connie and the 2012 miniseries Titanic as Annie Desmond.
In 2012, Coleman also introduced the prequel, The Great Detective, and the trailer for The Snowmen, for their broadcast during Children in Need.
Jenna-Louise Coleman first appeared on Doctor Who in TV: Asylum of the Daleks, the only episode she shared with Matt Smith's former co-stars, Karen Gillan and Arthur Darvill. Coleman's character, Oswin, died at the end of the episode. She later returned as a temporary companion in the Christmas special and her character, this time named Clara, died again. Coleman then joined as a full-time companion in TV: The Bells of Saint John, once again playing a woman called Clara who was a third incarnation of Clara Oswin Oswald.