 Two other main Black Knights sets were released the same year as the Black Knights Castle in 1992.They were the 6057 Sea Serpent (the biggest Lego Castle boat ever released in the 1990s) and 6009 Black Knight, a small set that included a single, full armored knight, along with the new dragon plume and shield accessories.A number of new accessories were created for the three new sets, including a new oval shaped shield with a different dragon design usually carried by mounted knights, new dragon plumes available in four different colors (just like the feather plumes) which added side dragon wing plumes to the movable visors on knight helmets.