Sarah Jane (Hallo My Dalek)

Sarah Jane was a human from Earth and an acquaintance of the time traveller Doctor Why. She was prone to screaming when faced with scary sights, and, more uniquely, to pushing these screams to become perfect musical notes.

Biography
Like the Brigadier, the Brigadier was a recurring acquaintance of the time traveller Doctor Why, although when a misunderstanding led to Sarah Jane believing that the Doctor was making passes at her, she bashfully claimed that they "hardly knew one another".

After the Brigadier was contacted by Home Office about the trouble Why was causing by keeping his TARDIS packed in inconvenient places in London (such as atop the Post Office Tower), he visited the TARDIS with Sarah Jane just in time for the Doctor to realise that he was under attack from the Wheeltuppers and the Shonters. As such, the two were taken along when the Doctor dematerialised in a state of emergency. During the trip, they also came across another denizen of the TARDIS, the insane Dalek Doreen. (NOTVALID: Hallo My Dalek)

Behind the scenes

 * This Sarah Jane, who is never named in full, is obviously a parody of the Sarah Jane Smith of Doctor Who proper.