Blackadder Goes Forth Melchett and Tim McInnerny as Captain Kevin Darling, who had both appeared in guest roles in "Blackadder the Third" and had appeared regularly in "Blackadder II". This cast appeared together in every episode of the fourth series, although the only episode to feature no guest appearances was "Captain Cook". Miranda Richardson, who had played Elizabeth I in the second series, appeared in a guest role in one episode (as she had in the third series). In their guest performances, actors such as Rik Mayall and Gabrielle Glaister reprised characters they had played in earlier series. Other performers, such as Bill
Spooks (series 3) and guest appearances. Megan Dodds returns as CIA liaison Christine Dale in the first episode. Tim McInnerny recurs as JIC chairman Oliver Mace. McInnerny was better known as a comedic actor, particularly for his role in "Blackadder", but the producers felt that quality made Mace a more menacing character. Richard Harrington plays Will North, Zoe's boyfriend turned fiancé. Ian McDiarmid guest stars as Fred Roberts. The producers noted that McDiarmid played Roberts with the right amount of vulnerability, strength and stubbornness. Indian actor Anupam Kher appears as Harakat in "Who Guards the Guards?". Oyelowo stated that Kher had an "instant