The Knights of the Black Blade were originally the Death Knights of Acherus under the Lich Throne, and in the gloomy Stronghold of the Black Blade, the high-ranking Death Knights led the Scourge to gradually erode the continent of Azeroth.

During the Battle of the Dawn of Light, the High Lord of the Death Knights, Darien Mograine, was finally freed from the Lich King at the advice of Alexandros Mograini, the Death Knight High Lord, who was buried deep in the Chapel of Light's Wish and was already the Heroic Father, and renamed the Knights of the Razor.

Blood and terror are the only means for the Knights of the Ebon to deal with the fallen and the undead creatures of the Scourge who are determined to defect to the Lich King, and the Knights of the Ebon do not hesitate to treat the Scarlet Vanguard, one of the main forces of the third camp of the Scourge Legion, to treat them equally, that is, to strangle against all opposition, and maintain an allied relationship with the Silver Northern Expeditionary Army of different faiths.

Speaking of the Knights of the Black Blade, it is impossible to mention the owner of the Blade of Ashes, Alexandros Mograini, the father of the Grand Lord of the Knights of the Black Blade, Darien Mograini, and the founder of the Scarlet Crusade.

During the Scarlet Crusade's attack on Stratholme, Mograine Sr. was betrayed by his eldest son, Renaud Mograine, who was tempted by the Lich King, resulting in Mograine Sr. being killed by his son and the Excalibur "Ember Bringer" defiled.

After Alexandros was plotted by Reynaud on the battlefield of Stratholme, the story is also known as he became a Death Knight under the Lich King, stationed at Naxxramas, and his Ash Bringer, no longer manifesting as sacred.

After hearing of his father's whereabouts, Darien Mograini broke into Naxxramas alone with four other companions. Darien and his friends kill the old Mograine, who became a Death Knight, and recapture the Ashbringers. But in the end, only Darien survived.

After Darien gets the Ember Bringer, since the Ember Bringer itself is fused with Old Mograine, Old Mograine's soul manifests in the sword and tells Darien to find Renault.

Darien entered the Scarlet Abbey with the Fallen Ember to meet his brother Renaud Mograine. When the Ember Bringer appears in front of Renault, Alexandros appears in front of Renault, who kills Renault with his own hands.

Later, Darion returned to the Chapel of Light's Wish with the Ashbringer, at this time the Chapel was being invaded by the Scourge Legion, because the Lich King was very interested in the thousand brave Heroes buried in the ground of the Chapel, and under the attack of the undead legions, the Silver Dawn gradually collapsed, at this time he turned his sword on himself, out of love for his father, Darien Mograini decided to use himself to save the fallen souls of his father's Ash Bringer.

The moment the blade pierced through Darien Mograine's body, a thousand Heroic Spirits beneath the Chapel of Light's Wish erupted in an unimaginable revenge, and the Scourge Legion that invaded the Chapel of Light's Wish was instantly wiped out. But Darien Mograini replaced his father as the next Fallen Ashes Messenger......

Darien's next appearance was at the Blackebon Fortress of Acherus, the Death Knight Training Base; He became the Death Knight of the Lich King, taking the Ember Bringer with him. Under the command of the Lich King, Darion led the Death Knights to wipe out the Scarlet Crusaders' forces in the Plaguelands and descended on the Chapel of Light's Wishes. However, the appearance of Tirio Fording turned the tide of battle, and Darien was captured.

Tirio Fortin's conversation with Darien:

"Didn't you learn anything, kid? You have now become the enemy of your father's lifelong conquest, like that coward, Arthas, who you have allowed yourself to be consumed by darkness and hatred...... Satisfy yourself by torturing and killing those miserable people! ”

Tirio Ferdin's continued: "Your master knows what lies beneath this chapel! That's why he showed his face. He sent you to send you to your death, Darien. ”

Tirioferdin said to Mograine, "What you are feeling now is the pain of thousands of lost souls! The souls that you and your Death Riders have brought in! The Light will tear you apart, Darien! ”

Mograine stood up and said to Tirioferdin, "Excuse me, old man. This is the last time you'll turn against me. ”

At this moment, the conversation between Darien and his father came into view...... "Don't forget what I said today......

The Lich King's arrival shatters the memories, and he uses a dark spell on Fordin. Darien quickened his wits and tossed the Ember Bringer at Tirio Fordin. The paladin, who gained power, easily defeated the Lich King.

After the victory, Fordin talks to Darien

"Ladies and gentlemen, we have all been through this tragic process. The blood of many warriors was shed on this land, and the venerable knights, desperately defending their lives - and ours! Their deeds will never be forgotten! We must always be vigilant! The Lich King must pay for the atrocities he has done~ and we will not allow him to wreak havoc on our world in the future! Brothers, sisters, I promise you now: the Lich King will be destroyed! Today, I need us to form an alliance: the Silver Hand and the Silver Dawn will become one for a common goal! We will rise where we have fallen and win! We will declare war on Alsace and finally bring down the Icecrown Glacier Fortress! ”

Tirio Ferdin: The Silver Crusade declares war on you! Alsace!

High Lord Darien Mograini said to Fordin, "So do we, the Knights of the Black Blade. Although our race has no place in your world...... But we'll fight to finish off the Lich King. I swear! ”

The Knights of the Black Blade under Darien's command have since allied themselves with the Silver Crusade and befriended the Alliance and the Horde on an expedition to Northrend to fight the Lich King's undead legions on Icecrown.

(This paragraph is about the source of the Knights of the Black Blade, just for everyone to understand the background, again, don't map some of the plots in this article to Warcraft)