In the film version of one of the serials, Dr. Who and the Daleks (1965), Barbara was played by actress Jennie Linden, but with a very different personality and backstory, which includes her being a granddaughter of "Dr Who".
Barbara Wright first appears in the first Doctor Who serial, An Unearthly Child (1963), where she is teaching history at Coal Hill School in London in 1963, working with science teacher Ian Chesterton (William Russell).
In an attempt to learn more about Susan, Barbara and Ian follow her home to a junkyard, where they hear her voice coming from what appears to be a police box.
During a confrontation with her grandfather, the Doctor (William Hartnell), Barbara rushes in to the police box, only to discover that its exterior hides the much larger interior of the TARDIS.
At the end of the first episode of that serial, Barbara becomes separated from her fellow travellers and is threatened by an unseen creature with a metal arm, marking the first appearance of a Dalek.
Barbara remains level-headed and logical, allowing the Doctor to trace the source of the distress to telepathic influences from the TARDIS (which is trying to warn them of a major failure).
Seeing that Barbara has been hurt by his accusations, the Doctor apologises and begins to realise he can rely on the two teachers, sealing a friendship which lasts until their eventual departure from the TARDIS.
Barbara was also mentioned in episode one of the 1993 Children In Need charity special Dimensions In Time and again in Death of the Doctor, a two part story in the fourth series of The Sarah Jane Adventures transmitted in October 2010.
Barbara also appears in several Big Finish Productions audio dramas, which are narrated by surviving cast members Carole Ann Ford or William Russell.
Actress Jemma Powell, who played Jacqueline Hill and Barbara in the docudrama An Adventure in Space and Time, also voiced the character in Big Finish audio dramas.
The character also appears in the Dell comic strip adaptation of the film and the short story The House on Oldark Moor by Justin Richards.