13th Black Crusade - Senior Command: Ursarkar E. Creed - Lord Castellan of Cadia and overall Imperial Commander of the defence of Cadia.Logan Grimnar - Great Wolf (Chapter Master) of the Space Wolves Chapter and overall commander of the Adeptus Astartes forces in the Cadian System. A council of representatives from those Chapters of the Space Marines opposing Abaddon's 13th Black Crusade elected the irascible Great Wolf as their nominal head.Admiral Quarren - Commander of Battlefleet Cadia and overall commander of Imperial Navy forces, Admiral Quarren has been hailed a true hero of the Imperium, for his masterful defence of the space lanes was all that stood between survival, and utter defeat for the Imperium. Though Cadia is besieged, the Imperial Navy commands space, and is able to offer support to beleaguered forces on the ground. The only question is whether the rapid redeployment of almost the entirety of Battlefleet Gothic, along with a substantial proportion of Battlefleet Solar will leave the Navy dangerously overstretched elsewhere and unable to maintain the level of operations required to hold the line at the Cadian Gate.Saint Celestine - Saint Celestine is a revered Living Saint of the Adepta Sororitas' Order of Our Martyred Lady, a being of incredible psychic power and faith believed by many in the Imperium of Man to be have been resurrected as a tool of the Emperor of Mankind Himself. As a mortal, she was thought slain during a campaign against the Renegade Warmaster of Forrax, but has returned at various times since to rescue Imperial forces in danger of being destroyed by the enemies of the God-Emperor. Wings spread wide, halo blazing and Ardent Blade in hand, Saint Celestine is an embodiment of the God-Emperor's might. She shines like a star amid the smoke and fumes of the battlefield, radiating holy light. The faithful are filled with strength and courage by her presence even as Heretics recoil in terror. Those who ﬂee are wise to do so, for Celestine strikes like the Emperor's own judgment, smiting the unrighteous with a strength that belies her human form. With a gesture, the Living Saint calls fires of psychic retribution down from on high, or infuses her sick and injured allies with healing energies. The Geminae Superia fight at her side, the former Sororitas Canonesses Genevieve and Eleanor, hand-chosen champions who would lay down their lives -- and have, several times -- to protect the blessed saint from harm. Celestine's most recent and greatest intervention came in 999.M41, when she appeared on Cadia as it was under assault by Abaddon the Despoiler's 13th Black Crusade. She brought crucial reinforcements to the Imperial defenders and became one of the leaders of the Imperial survivors -- who named themselves the Celestinian Crusade in her honour -- after Cadia was destroyed by the forces of the Despoiler. With the aid of the newborn faction of the Aeldari called the Ynnari, the Celestinian Crusade managed to flee the Cadia System through the Webway to the Realm of Ultramar and its capital world of Macragge. There, Celestine played an important role in the events that led to the resurrection of the Ultramarines Primarch Roboute Guilliman. Celestine joined the Terran Crusade that Guilliman proclaimed, and fought alongside it all the way to Holy Terra so that the Primarch could meet with his father, the Emperor. Once at the Imperial Palace, Celestine swore to stand with the Guilliman, now the Lord Commander of the Imperium, as he promised to unleash a great counteroffensive against the Forces of Chaos.Belisarius Cawl - Belisarius Cawl is a ten-thousand-standard-years-old Archmagos Dominus of the Adeptus Mechanicus, one of the ruling lords of the Priesthood of Mars. He played a pivotal role in the events of the 13th Black Crusade, the Celestinian Crusade and the Terran Crusade, and shared responsibility with the Ynnari for the resurrection of the Primarch Roboute Guilliman as the Lord Commander of the Imperium.Katarinya Greyfax - Katarinya Greyfax was a Puritan Inquisitor of the Ordo Hereticus who played a crucial role in the last days of the 13th Black Crusade before the fall of Cadia and in the resurrection of the Primarch Roboute Guilliman during the Terran Crusade. Later, she was tasked by Guilliman, now the Lord Commander of the Imperium, with hunting down the artefact known as the Hand of Darkness which the Primarch believed could be used to help seal the Great Rift that had cut the Imperium of Man in two after Abaddon the Despoiler's triumph at Cadia.Marius Amalrich - Marius Amalrich was a Marshal of the Black Templars Chapter of Space Marines who played a significant role in the final days of the 13th Black Crusade before the fall of Cadia, in the Celestinian Crusade that resurrected the Primarch Roboute Guilliman, and in the Terran Crusade Guilliman led to meet with his father the Emperor of Mankind on Holy Terra. After Guilliman's resurrection and the arrival of a new Black Templars Crusade at Macragge to support the efforts of the revived Primarch, Amalrich was recognised for his contributions and was named the Emperor's Champion by his Chapter's Chaplains. During a critical moment of the Terran Crusade aboard a Blackstone Fortress in the Warp rift called the Maelstrom, Amalrich stabbed the Bloodthirster Skarbrand the Exiled One through the chest with the Black Sword of the Emperor's Champion. Though this effort cost Amalrich his life, Guilliman exploited the wound to defeat the Greater Daemon of Khorne, escape from the trap set in the Maelstrom by Kairos Fateweaver and make his way to Terra.