Blackadder a vulgar friend in his first appearance and then a successful rival of Blackadder in a later episode of series 2 and 4. He also played a decidedly Flashheart-like Robin Hood in "Back & Forth". Lee Cornes also appeared in an episode of all three Curtis-Elton series. He appeared as a guard in the episode "Chains" of "Blackadder II"; as the poet Shelley in the episode "Ink and Incapability' of "Blackadder the Third"; and as firing squad soldier Private Fraser in the episode "Corporal Punishment" of "Blackadder Goes Forth". More established actors, some at the veteran stage of their careers,
Blackadder Goes Forth Wallis and Lee Cornes, who had played minor roles in prior series, appeared briefly again in the fourth series as well. This series of Blackadder was one of the first television programmes in Britain to be made and transmitted with stereo sound, using the NICAM digital system, even though most viewers could only afford, or were only able to receive due to their location, the standard FM mono audio carrier signal. The series was directed by Richard Boden and all interior scenes were shot at BBC Television Centre in front of a live studio audience. Rowan Atkinson recalls that the