Series 4x2: Fires of Pompeii
Prior to portraying Amy Pond in Doctor Who, Karen Gillan was a soothsayer in The Fires of Pompeii, where she faked an English accent.
Jenny- The Best Minor Character in Series 4.
She isn’t technically the Doctor’s daughter, but he warms up to her and treats her like it—until she’s shot. He thinks she’s dead and is visibly distraught at her inability to regenerate. After the Doctor leaved, Jenny revives and takes off in spaceship. Her fate is left unknown.
Jenny represents hope for the Time Lord race.