After the Purges and the destruction of Antigen, the Lycan Marius began regrouping their race and forming an army to wipe out the Vampires once and for all. Marius's army was made out of hundreds of Lycans and several different packs that came together to wipe out the Vampires. Aided by their Death Dealer spy Alexia and superior tactics, the army wiped out at least four different Covens until only the Eastern Coven and the Nordic Coven were left. However, the defenses of the Eastern Coven were so strong that the Lycans had no way of bypassing them without potentially losing 90% of the army.
As a tactic for winning, the army hunted down the Vampire-Corvinus Strain Hybrid Selene in order to find out where her daughter Eve is. With Eve's blood, Marius could cement his already-incredible power gotten from draining the blood of Michael Corvin and periodically injecting himself with it. The threat of Marius and his army was considered so great that the Vampire Council reluctantly agreed to grant Selene clemency for killing the Vampire Elder Viktor in exchange for her training their "raw recruits" to fight Marius's army. However, the ambitions of Semira led to Selene being on the run once more with David.
After learning that Selene is at the Nordic Coven, Alexia lead the army to the Coven's fortress. The Lycans, armed with ultraviolet ammunition, battled the Coven while Marius fought Selene with Alexia's help. While both sides suffered losses, Marius called a retreat after Alexia learns from Selene's blood memories that she didn't know where Eve is. As a result, the Lycans abandoned the battle before either side wiped out the other.
Aided by Alexia shutting down the Eastern Coven's defenses, Marius's army launched a massive attack on the Coven during the daylight when the Vampires are at their most vulnerable. Using riot shields to block the Vampires bullets and using mortars to blow holes in the Coven's walls, letting in the sunlight upon the Vampires, the army at first has the upper hand. However, Selene returns with enhanced powers and the Nordic Coven for backup. Dropping their weapons, the army changes into their Lycan forms to battle the Vampires as Selene leads Marius to the training room to battle him one-on-one.
As the battle continued, Selene and David returned with the severed head of Marius. Catching the attention of Marius's army, David announces to them that their leader is dead and they need to take their wounded and leave. After David reiterated his order, the leaderless survivors of the army retreat, defeated. Without their central leader, the army presumably disbanded following the battle.
- Unlike other Lycan forces previously seen, Marius's Army generally fights in their human forms rather than their Lycan forms. This, along with their superior tactics, is presumably a part of the reason they had the upper hand against the Vampires who are more used to fighting transformed Lycans. During Blood Wars, the only time the army is seen transforming is a few transforming Lycans during the battle at the Nordic Coven before they all transform to escape and when everyone transforms after Selene arrives at the Eastern Coven with the Nordic Coven for backup.
|Selene - David - Marius - Thomas - Semira - Lena|
|Varga - Cassius - Michael Corvin - Vidar - Hajna - Istvan - Alexia - Gregor - Eve - Amelia|
|Vampire - Lycan - Hybrid - Immortal - Human|
|Weaponry of Underworld: Blood Wars - Swords - Beretta 92FS - Scorpion EVO 3 - Nightshade|
|Nordic Coven - Eastern Coven|
|Var Dohr Cocooning Ritual - Corvinus Strain - Death Dealer - Vampire Elder - Vampire-Lycan War - Marius's Army|
|Music - Comic - Quotes - Images - Score|