Edmund Blackadder to a lord ("Blackadder II"), a knight (""), a royal attendant ("Blackadder III"), a shopkeeper ("Blackadder's Christmas Carol"), to an army captain ("Blackadder Goes Forth"). Throughout each series, Blackadder is a self-serving, cynical opportunist concerned solely with increasing his own influence, status and wealth. His character is symbolized by the adder, the United Kingdom's only native venomous snake, which sometimes appears in the series as a visual motif. With the exception of the first Blackadder incarnation, Prince Edmund, each Blackadder is generally cynical, charismatic and intelligent. While he is haunted by bad luck, he is usually very capable of manipulating
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.