Lucian was instrumental in the tracking of rogue Lycans. He later helped defend the vampires in the castle he served in against angry humans, by driving them off with vampire bats the attackers believed to be actual vampires. Having been responsible for repelling the attack, he was rewarded with a steel dagger with a wolf motif on the hilt. The next time he met those angry humans was in an ambush, while on the way to Viktor’s castle, with vampires and Lycans where Viktor’s wife was killed and when Lucian’s relationship with Sonja began.
Lucian and Sonja began an affair shortly after Sonja’s arranged marriage to Marcus’s son Nikolas was announced. It was revealed later that Sonja was pregnant with Lucian’s child, making it a Lycan-Vampire hybrid. Before Sonja was killed by her own father, Lucian had married her in the Chapel they used for their many secret rendezvous. However, their plan to escape together was stopped short by Leyba, a wanton Lycan servant that had an eye for Lucian and resented his rejection of her for Sonja. Frustrated at being spurned, she went to Soren and told him of the yellow ribbon Sonja had given Lucian, which he in turn told Viktor.
Viktor feared a blending of the bloodlines that Sonja’s pregnancy threatened, and had Lucian whipped in front of her. Viktor then had her tied to a stake in a specially designed room, exposing her to sunlight thus burning her alive, while forcing Lucian to watch. When night fell, the full moon rose and shone on Lucian allowing him to transform into his Lycan form and escape before Viktor could kill him. Before escaping, he managed to get Sonja’s pendant from her burnt corpse, the only memento he would have of the love of his life. That night, he swore an oath to reunite the bloodlines, as his own child should have, and to destroy Viktor.
After Sonja’s death and his escape, Lucian raised an army of rogue Lycans and those who wished to fight against the vampires. His first accomplishment was capturing Viktor’s silver mine. After failing to defend the mine and the lose of several Lycans to a surprise attack by the vampires, he fought against Nikolas. It was then that he was first able to assume his Lycan form without the use of the full moon, and he killed Nikolas.
Following Lucian’s success, the vampires began to demonize him. According to Selene, at the beginning of the first movie, Lucian was the “most feared and ruthless leader ever to rule the Lycan clan,” and the major instigator of the war between the two species.
Vampire lore says that he began the war himself almost a millennium ago. By the time the first movie started, however, it was believed that Lucian was killed by Kraven. Accordingly with Lucian's success, the vampires began to demonise him. Lucian was the "most feared and ruthless leader ever to rule the Lycan clan," according to Selene in the opening of the first movie.
Lucian had been a terrible and dangerous Lycan war lord, and the major instigators of the war between the species. Vampiric lore says that he began the war himself almost a millennium ago. However, by the time the movie began, it was believed that Lucian's threat was over, and the Lycan himself was dead. According to the historical record "The Fall Lucian and His Army", written by Andreas Tanis (the vampire's historian): "Of the scores of brave souls who ebtered Lucian's fortress, a single vampire survived; Kraven, who was richly rewarded for not only setting the great blaze, but for returning with evidence of the Lycan master's semise: the branded skin, cut from Lucian's very arm"
The quote tells of an incident in 1409, where a brave team of Death Dealers attacked Lucian's stronghold, and a great battle ensued. A group of Royal Soldiers warned of the attack. The soldiers were called The Devil's Own and were demons. When vampires arrived, they were met by a force of Lycans much greater than they had expected. The Death Dealers were easily slaughtered. Kraven, a former Death Dealer, survived because he hid in fear of being killed during battle.
When Lucian found him, he offered him a deal: life, glory, and eventual leadership of both great covens, in return for claiming that Lucian was dead. It is later revealed that they also had a familial connection, cousins, despite their race differences. Although this term may have been used in relation to the closeness of the bloodlines. As Kraven fled back to Ordoghaz, Lucian burned his fortress to the ground, and escaped into the night. Lucian searched for The Devil's Own and secretly fought alongside them learning to become more powerful and control his abilities. Later he left their kingdom and reunited with his fellow Lycans.
Six centuries passed before anyone began to suspect that Lucian had survived. By then, Lucian had formed an alliance with the exiled vampire historian Andreas Tanis. Tanis provided him with ultra-violet ammunition for aid in the war against the vampires (the ammunition acted as an artificial sunlight that burned the vampires from the inside-out). In return, Lucian provided Tanis with first-generation Lycans as guard dogs, and with a relatively comfortable existence.
Lucian’s seeming obsession with the Corvinus bloodline was later revealed to be a by-product of his desire to combine the bloodlines, using a pure sample of the immortality virus, which he believed could be found in the blood of Alexander Corvinus’ mortal descendants. Lucian found a dying scientist named Singe sometime after World War I, and offered him immortality in return for cracking the genetic code of the Corvinus line. Lucian periodically sent out Raze, Pierce, Taylor, and Trix – his oldest and most trusted lieutenants – to capture members of the Corvinus family. One their way to capture Michael Corvin, Raze and Trix were ambushed by three Death Dealers. Raze managed to kill two of the vampires, Rigel and Nathaniel. The third vampire, Selene, escaped after killing Trix.
After learning of Raze’s failure to capture the human, Lucian set out to capture Michael himself. He personally acquired Michael’s blood, simultaneously infecting him with the Lycan virus and giving Michael his memories. Until that point, Lucian appeared (through Selene’s one-sided perspective) to be a vile and evil mastermind bent on the destruction of the coven. However, as Michael began to realize the meaning of his new visions, the understood the last six centuries from Lucian’s point of view.
The first crucial step in Lucian’s revenge required the blood of Michael Corvin. Lucian knew that merely injecting himself with Michael’s blood would not be enough. He also needed the blood of a Vampire Elder to become a powerful hybrid. Lucian sent Pierce and Taylor to abduct Michael. He sent Raze and a team of fully transformed Lycans to drain a Vampire Elder, Amelia, of all her blood. Before Raze could return with Amelia’s blood, Kraven, Viktor, and a horde of Death Dealers arrived. Yet unable to react to the new turn of events, Lucian was betrayed by Kraven and was shot in the back with silver nitrate bullets that were specially designed to send silver straight into the bloodstream of a Lycan, killing them much faster.
Lucian regained consciousness several minutes later to see Michael and Selene together. Seeing out history was repeating itself, and realizing his part was finished, Lucian injured Kraven by stabbing him in the leg, but not before Kraven was able to shoot Michael.. He then told Selene to bite Michael, rationalizing that her bite would offset the ill effects of the silver, and would finish his work of blending the bloodlines.
As Selene sank her fangs into Michael’s neck, Lucian proclaimed to Kraven, “You may have killed me, cousin, but my will is done regardless.” Kraven then shot Lucian multiple times in the chest, killing him. Lucian died satisfied knowing that his wife would be avenged and his goal had been achieved.