Perpugilliam “Peri” Brown, met the Fifth Doctor while bored at her stepfather archaeological dig on Lanzarote. After helping defeat the Master, Peri opted to travel with the Doctor. During an early adventure, the Doctor and Peri contracted Spectrox Toxaemia on Androzani Minor. The Doctor’s selfless actions saved her from death and prompted the Time Lord’s fifth regeneration. The Sixth Doctor was initially unstable, and Peri had trouble coming to terms with him. She fought Cybermen on Telos, the combined machinations of the Rani and the Master, and joined the Doctor’s second incarnation in Spain to repel the Sontarans. During the Doctor’s trial, it was revealed that Peri died on Thoros Beta, when her mind was overwritten with that of the Mentor Lord Kiv. King Yrcanos – being used as an assassin by the Time Lords - destroyed the Peri-Kiv hybrid’s body. When the Doctor was acquitted, he was informed that the evidence concerning Peri’s death had been falsified – she lives, married to Yrcanos, a warrior queen of the Krontep.