"Knights of the Blood" is a guild in the popular virtual reality game Sword Art Online. Known for their strength and teamwork, they are one of the most powerful groups within the game. The guild is led by Heathcliff, who is also a key player in the game's storyline. The primary goal of the Knights of the Blood is to defeat the game's challenging bosses and progress through the levels of the game. They are recognized for their strategic approach to combat and their commitment to helping other players. Their reputation makes them a respected force in the Aincrad world.