Blackadder appeared in more than one of the Blackadder series and/or specials. These are: Ben Elton's arrival after the first series heralded the more frequent recruitment of comic actors from the alternative comedy era for guest appearances, including Robbie Coltrane, Rik Mayall (who had appeared in the final episode of the first series as "Mad Gerald"), Adrian Edmondson, Nigel Planer, Mark Arden, Stephen Frost, Chris Barrie and Jeremy Hardy. Elton himself played an anarchist in "Blackadder the Third". Gabrielle Glaister played Bob, an attractive girl who poses as a man, in both series 2 and 4. Rik Mayall plays Lord Flashheart,
Edmund Blackadder who shot Harold II at The Battle of Hastings. Blackadder is a genuine surname, its usage in the UK currently documented back to the 15th century, which may explain the choice of the name, with the first series being set in this time period. The name is thought to be mostly Scottish in origin, which is not contradicted in the series, as the first Blackadder begins as the Duke of Edinburgh. In the third series it is revealed that a branch of the Blackadder family is a significant clan in Scotland, although they have become known by the name MacAdder.