Baldrick plan" made its first appearance in the pilot episode, but it is not regularly used until the third series; Blackadder had mentioned the phrase twice in the first series and Baldrick once. Baldrick had also claimed to have "a plan" in a "cunning" voice on one occasion in "Blackadder II". In the final episode of the last series, "Blackadder Goes Forth", Baldrick announces that he has a cunning plan to save the main characters from "going over the top", although it is never revealed what this plan might be (other than that it is "as cunning as a fox who's
Blackadder Goes Forth clever, and very funny, and they all want to push the scripts along. It's a very exhausting process, and by the end of it we all swear we'll never, ever, do another one. But then you start to think how rare it is to get so many good people in the same room and you talk yourself into doing another series." Rowan Atkinson and Tony Robinson reprised their roles as Edmund Blackadder and Baldrick respectively. Hugh Laurie also returned to play Lieutenant George. The fourth series enlarged the principal cast from the third series to include Stephen Fry as General