Castle ( 2007 ) Castle was a theme introduced in 2007 . The theme was often referred to as " Fantasy Era " or " Fantasy Castle " by fans to avoid confusion with the original Castle theme that was introduced in 1978 . The theme ran until 2010 , when it was replaced with Kingdoms . The theme mainly focuses on fantasy creatures such as trolls and dwarves , and pits humans against various evil creatures instead of an opposing faction of other human beings . Most sets contained warriors from two opposing factions , in order to increase playability . The first protagonists of the human faction were known as the Crown knights , who fought the Skeleton warriors , led by an Evil Wizard , who appeared in the first year of the theme . In 2008 new foes , the trolls , arose , who were also enemies of the newly added Dwarves . In 2009 only three new sets were released , including 10193 Medieval Market Village which is known to be the most intricate work of European styled buildings ever released by LEGO as an official product . The theme also appears in My LEGO Network as stickers and backgrounds . Factions . Crown Knights : The Crown knights are the faction that represents the humans and were introduced in 2007 . They are led by the Crown King and their coat of arms is a crown superimposed on a blue background as seen on their shields , flags and uniforms . The faction is based at the Castle . Other buildings include a tower , a fortified port and another fortified tower . The Crown knights do not have any vehicles other than a chariot , but do , however , have two siege engines , a catapult and a crossbow . The Crown knights not only use horses as mounts , but dragon s as well , as seen in 7048 Troll Warship . This faction features a complete royal family with a King , a Queen and a princess . The court also encompasses a Good Wizard and a Court Jester , as well as a general . The Crown Knights may have been linked to the Sentinel faction in LEGO Universe as they appeared in teasers and similar gear was distributed throughout the game . Skeleton Warriors : The Skeleton warriors are the first adversaries of the Crown knights and appeared in 2007 . They are living skeletons that occasionally use skeleton horses as mounts . Their leader is the Evil Wizard . Their symbol is a skull which is featured on their round bucklers and oval shields . The only building they control is the Skeleton Tower , which is also the evil wizard ' s lair . They own a ship and a carriage , but no siege engines . These warriors are similar to the skeleton army in the Ninjago theme . Troll Warriors : The trolls are monsters that were introduced in 2008 . They have a large complement of siege engines at their disposal , as well as a large ship . They are in possession of a single building , a fortress . There are two versions of trolls , the average sized ones known as Troll Warrior , and larger ones known as giant trolls . Their symbol is an elongated skull which is featured on flags and their rectangular shields . There are four versions of the giant troll , green and orange and green and orange dark armor epic giant trolls with tattoos on there arms . Their " official " enemies were the Dwarves , but they were opposed to the Crown Knights as well , at one point capturing their king . Dwarves : The Dwarves are a race of miners who are constantly attacked by the trolls . They were introduced in 2008 . Their symbol is a winged helmet on a blue background and is featured on their round shields . Only three sets have been released , including a large mine , a battle machine , as well as a battle pack with five dwarf minifigures and equipment . In all of these sets the dwarves are pitted against the trolls . A dwarf is also included as a prisoner in the set 7048 Troll Warship . Their weapons are battle axes that consist of two axe blades from Vikings attached to a brown stick . They also use regular axes made by the same method but using only one axe blade . Dwarves use large war hammers as well .