Frazer Hines
Hines' "Doctor Who" debut came in 1966, when he was cast to play the part of Jamie McCrimmon, the companion of the Second Doctor (played by Patrick Troughton). Originally intended as a one-off guest character, Jamie joined the regular cast and appeared in the series from 1966 to 1969. Hines reprised the role in a cameo in the 20th anniversary serial "The Five Doctors" (1983) and as a guest star in "The Two Doctors" (1985). Hines would appear in 117 episodes of "Doctor Who" in all—more than any other "companion" actor in the history of the series. The only actors appearing in more episodes are those who played the first four Doctors. Many of the episodes featuring Jamie no longer exist in the BBC's collection.
Jamie McCrimmon
James Robert McCrimmon, usually simply called Jamie, is a fictional character played by Frazer Hines in the long-running British science fiction television series "Doctor Who". A piper of the Clan McLaren who lived in 18th-century Scotland, he was a companion of the Second Doctor and a regular in the programme from 1966 to 1969. The spelling of his surname varies from one script to another; it is alternately rendered as Macrimmon and McCrimmond.