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: The Cavalier Years time of his father's death.) As he cannot explain his betrayal to the King, Sir Edmund panics and uses the plan that Baldrick had suggested earlier. The camera then focuses on Baldrick, who is listening to the sounds of the execution. Sir Edmund chops the pumpkin and proclaims that "This is the head of a traitor". Predictably enough, the crowd answers him, "No, it's not! It's a huge pumpkin with a pathetic moustache drawn on it!". Sir Edmund apologises and says he will try again. Baldrick continues to listen as Sir Edmund Blackadder beheads King Charles I and the crowd