- "He was a demon of untold power. A being who seemed to feed off the worlds to which he was summoned... a being of infinite appetite." – Eldred, Allegiance (Intermission)
- "I am the embodiment of all creation's ills, and my purpose is but a simple one: to annihilate all that is unworthy. All that is a reflection of myself." – Marduk, Finale
Eldred and Marduk met previously in Eldred's home realm of Jhera when Eldred, desperate to maintain control of his empire, summoned the demon to destroy his encroaching enemies. Marduk, however, reduced the entire world to ruin, forcing Eldred's flight across the Astral Void.
As the story goes, Marduk gains more following with his wizards in the Cult of Ashur. He appears in person for the first time just to taunt Eldred about fulfilling his wish and explaining that he will also destroy this realm. Marduk also appears in Persephone's last mission when he and his wizards kill Stratos and Abraxus. Most of Marduk's actions are not seen but he always contributes to the death of the gods independent of Eldred. He also killed and took the appearance of Mithras and was listening to Eldred's story. He lastly appears during the game's finale, where he is killed by Eldred.
He is an active participant only in the game's finale and his stats there differ in several degrees from that of a mere wizard. Alongside a full Charnel spellbook and the stats of a regular wizard he also has:
- Altar on an unreachable island, meaning he can't be destroyed by having his altar desecrated
- The ability to collect Red Souls
- Added spells Halo of Earth, Boulderdash, Meanstalks, Bore, Blind Rage, Phoenix and Silverback
- Bonus 200 to Movement Speed
- Bonus 1500 to Max Health
- Bonus 500 to Max Mana
- Bonus 40% to Resistance to Direct Spell and Splash Spell
- Bonus 35% to Resistance to Melee, Direct Ranged and Splash Ranged
His color in every mission is always dark blue, representing his allegiance and leadership of the Cult of Ashur.
Marduk uses the same taunts in singleplayer as in multiplayer, with the exception of the following (directed specifically at Eldred):
- Flee as you did in Jhera!
- The doom of the world is at hand. Save yourself while you have a chance!
- Surrender, and I will kill you quickly.
- Show me your rage!
- Do you think you can destroy me? I am destruction itself!
Encountered as Foe duringEdit
|Characters in Sacrifice|
|Gods||Creator | Persephone | James | Stratos | Pyro | Charnel|
|Wizards||Eldred | Shakti | Ambassador Buta | Abraxus | Jadugarr | The Ragman | Yogo |
Grakkus | Seerix | Acheron | Hachimen | Charlotte | Sorcha | Marduk | Mithras
|Heroes||Gangrel | Astaroth | Sara Bella | Thestor | Faestus | Lord Surtur | Gammel | Toldor | Sirocco|
|Others||Zyzyx | Athelas | Fallen One|