Blackadder The Third (Duke of Wellington)
Although the character Melchett did not appear in the third series of Blackadder, Stephen Fry appeared in the final episode as The Duke of Wellington, portrayed as a loud, bellowing and bellicose warmonger with a tendency towards casual violence aimed at the serving classes (in particular the incompetent and buffoonish Prince Regent, who was then disguised as his own butler). Eventually he kills the Prince Regent thinking he is a butler, meaning Blackadder takes the Prince's throne.
The Duke of Wellington reappeared in Blackadder: Back & Forth, appearing less casually violent and loud than in his original appearance, where Blackadder's time machine accidentally crushed him before the Battle of Waterloo in his original journey through time and creates an alternate timeline where Napoleon won; Blackadder later returns to that time frame a few moments before his original appearance to ensure that the Duke doesn't walk over to stand in the location where he was crushed originally.
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