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
Blackadder II electric guitar, and feature a black snake slithering about on a marble table. The snake, noncompliant to the wishes of its handler, is eventually removed and replaced with something related to the episode title, which in this series is always a single noun. The opening ominous string crescendo and imagery are a parody of the opening credits of the 1976 BBC television adaptation of Robert Graves' "I, Claudius". The closing titles use a different arrangement of the theme, sung by countertenor Jeremy Jackman, with lyrics (usually insulting Blackadder) that reflect the events of the preceding episode. The song is played