[Titanscape (OP)]

I was just thinking a suggestion for the writers at the BBC, that Dr Who's Nemesis, the Master, the evil Galifreyen, is ripe for a rejuvenation, don't you think? I don't recall ever seeing him die and rejuvenate.

[imatfaal]

well I can think of at least three actors who have played him - Roger Delgado, Derek Jacoby, and John Simm - I don't know if any had on screen regen but I guess that regen was the idea for why he had changed

[Titanscape (OP)]

http://en.wikipedia.org/wiki/Master_%28Doctor_Who%29

This link explains the Master well. At one point he was a partly decayed character and also does regen in an episode I missed.