Sir Lancelot is a recruitable Knight and undoubtebly the most memorable knight of Arthurian legend the only other characters that come close being Merlin and Arthur. Sir Lancelot is being held by the Sidhe and forced to battle Sir Mordred for their entertainment. When you do the quest to rescue Lancelot and Mordred you will be given a choice between Sir Mordred and Sir Lancelot. If you choose Lancelot as your Knight then Sir Mordred escapes the tower and recruits an army of monsters namely evil creatures like Giants to battle Arthur as his own Faction and spawns in the middle of Wales. Lancelot himself will serve as your Knight and helpful in removing the threat Mordred poses to your Kingdom.