Blackadder appeared in more than one of the Blackadder series and/or specials. These are: Ben Elton's arrival after the first series heralded the more frequent recruitment of comic actors from the alternative comedy era for guest appearances, including Robbie Coltrane, Rik Mayall (who had appeared in the final episode of the first series as "Mad Gerald"), Adrian Edmondson, Nigel Planer, Mark Arden, Stephen Frost, Chris Barrie and Jeremy Hardy. Elton himself played an anarchist in "Blackadder the Third". Gabrielle Glaister played Bob, an attractive girl who poses as a man, in both series 2 and 4. Rik Mayall plays Lord Flashheart,
Blackadder meeting between Richard Curtis and comedian Ben Elton led to the decision to collaborate on a new series of Blackadder. Recognising the main faults of the first series, Curtis and Elton agreed that "Blackadder II" would be a studio-only production (along with the inclusion of a live audience during recording, instead of showing the episodes to an audience after taping). Besides adding a greater comedy focus, Elton suggested a major change in character emphasis: Baldrick would become the stupid sidekick, while Edmund Blackadder evolved into a cunning sycophant. This led to the familiar set-up that was maintained in the following