The New Adventures of Robin Hood (1997) : 3x10

Lord Cloughton arranges a summit with three important Normans to conspire with the Saxons against King John. Each member of Robin's band undertakes to fetch one of the participants, protecting them from the men of Count Rood, who wants to prevent the meeting: Robin fetches the suspicious and reluctant Countess DuMonde, Marion fetches the agoraphobic young Count Lucerne, and Friar Tuck fetches Count Brouchard (who turns out to be Barkley), while Little John protects Lord Cloughton. Rood hires a mysterious assassin, who can morph into many different people and creatures, to help prevent the meeting.