Underworld Fanfiction Crossover

In the southern part of New York City, Nick and his family have newly moved in from the countryside and a lot awaits Nick ranging from extreme horror and sorrow. One Dr. Mario Mc'Vida is planning to use the powers of a pearl Nick found in the basement to join his home-Hell, with the earth. A dead man of half a millenium- Mr. Edrek Matthias- possesses Nick with the drive of guiding through his extreme fight. Nick gets a lot of pep talk from complete and utter supernatural strangers on his destiny and powers of saving Earth. Through his adventure, he meets new people, vampires, ghosts, demons and also learns new things from the underworld people always thought never existed. From all this, Nick gets confused and is on the verge of giving up, but... would Nick let that happen? Join Nick on his intense mission to save the world.

After the death of her mother, Sienna Vale is taken in by her powerful, secretive stepfather and placed under the “protection” of his three mafia sons. But what begins as guardianship turns into something darker—and far more tempting. As Sienna uncovers secrets about her past, her parentage, and the brutal world she now lives in, she finds herself falling deeper into a web of desire, danger, and forbidden love. The brothers were never meant to want her—but they do. And someone wants her dead. Each act raises the stakes: Act I: Seduction begins. One of the brothers might betray her. Someone wants her gone. Act II: She’s trained to survive—body and mind. Romance deepens. Rival mafias close in. Act III: War explodes. Sienna becomes the queen of their underworld—but must choose between love and legacy.

Taking over the responsibilities left by his brothers, Eltan Storm became the next scariest Don of Mafia Thunder after his father. The underworld became his kingdom, but there were two things he needed in his life: love and revenge. On one hand, Eltan wanted to avenge the death of his parents, and on the other hand, a part of him craved love. But bringing love into his life would mean more deaths, which he couldn't bear, until his eyes landed on Faith Mabel. Faith Mabel was working in the Berserkers, the most famous casino in Las Vegas. Having a traumatizing past, the last thing she expected was to pique the interest of her new boss, who was not only in the Mafia, but also a former artist. What will happen when Faith starts falling for Eltan? Will he reciprocate her feelings or push her away?

The strong, ruthless, and powerful Pedro De Luca (Nickolai) of the Lucado family ruled the dark underworld where he was born. Growing up, everything he ever wanted was within his reach. Except the person he wants the most. Being a charismatic and powerful leader of the mafia world. Many families sought to have him as a son-in-law. But Nickolai found himself searching the world for a young mysterious man whom he had a brief encounter with in the past. Every touch, feel and taste of him is freshly imprinted in Nickolai's memory. He just couldn't forget about him. He craves him and he must have him. Choi Narim (Jace) got entangled with his past lover who now happens to be the ruthless Don of the Lucardo Mafias. Despite every attempt to escape him. He ends up falling into the trap of his predator

Once a helpless girl, now the most feared assassin in the underworld—Sameera Ashar knows how to survive. But when she’s framed for the murder of billionaire Vaughn Steele’s wife, survival isn’t enough. She needs revenge. Vaughn should’ve known better than to trust the evidence. But blinded by fury, he hunts Sameera down, forcing her into a marriage built on deception and control. She’s his prisoner, his obsession… but never his victim. Yet, beneath the hatred, the stolen glances, and the war between dominance and defiance, desire sparks. The more Vaughn tries to tame her, the more she consumes him. And when the truth unravels, leaving them both exposed, he realizes too late—Sameera was never his to break. Now, with enemies closing in and a love as dangerous as the secrets between them, the hunter is about to become the prey.

Jessica lost her mother and her father brought home his mistress. With no other option, she went abroad. But she returns, this time stronger and eager to know the truth of her mother's death. She meets her father and is asked to marry the leading industrialist in the country, Steve Smith. To humiliate her father she runs away but is caught by her would-be-husband. He asks her to marry him in return for giving her the truth about her mother's death and she agrees. Steve thinks that the girl is just as innocent as a flower, but he is wrong, Jessica is just testing him whether he lives up to his title as the 'second most wanted gangster' in the underworld. While they both in love with each other their secrets about the underworld disturb their life. Will they be able to fight back and not just go with the flow? Well, this going to be hard...

Vanessa never expected her life to shatter in an instant. After getting kidnapped by someone dear to her, she is thrust into a brutal underworld, kidnapped by a mafia she barely knows exists. Her impulsive acts makes her make the horrible decision ever. Amidst the chaos, another mafia steps in to help her escape. Drawn to in ways he can’t explain, he risks everything to protect her from a deadly fate. But as she finds herself free yet in constant danger, she can’t deny the growing bond between them—or the sense of debt she feels towards him. With danger at every turn and enemies closing in, They must go through a world of violence, betrayal, and desire. Can they survive long enough to confront the past and take control of their futures? Their only hope may be each other, but in the mafia world, money comes first!

Briar is a smart, determined, driven woman who only has one goal in life, finding the ones responsible for taking her brother away from her. This leads her to become a detective who finds herself slowly becoming acquainted with the underworld, a place filled with crime, drugs, sex, and Ciaran O'Reilly, a cold-blooded monster who kills for fun. After their first meeting he warns her to never appear in front of him again, otherwise, he would claim her, after all, she is his mate, the one destined to him, made for him, and the one that he can never hope to have. But fate has other plans for the star-crossed lovers. Plans that continue to bring them together and eventually intertwine them in order to stay alive. Will Briar and Ciaran be able to ignore the bond that they share, or will they risk it all for the thrill of their lust? Read Falling Into Ruin to find out!

“There will be no escape for you, Regina. You belong to me now; heart, body and soul. Mine to do with as I please.” Draco’s eyes were ablaze with deadly desire. I smirked in the face of death. “Good luck with that.” ** Regina Milanesi has never backed down from a challenge no matter who stood in her way. She’s risen from her ashes and is now on her way to becoming the most ruthless woman to take the criminal underworld by surprise. But in doing so, she’s garnered the attention of Leonardo Draconis D’Angelo, the Capo dei Capi, the most ruthless and heartless man in the underworld. She loathes him with a vehemence that can only be matched with her desire to claim and be claimed by him. But her addiction to Draco just might be the beginning of her downfall, like a moth drawn to the flames…or the start of a love story written in blood.

A new sparks ignites Alanna's boring life when she gets unceremoniously kidnapped and taken to the underworld where she meets Zeron, a demon who is the king of the ice witches. Alanna thinks she has heard it all until she discovers that the king has been terminally ill for centuries and is dangerously controlled by his darkness, as a result of a curse that had been placed on him as a child. Furthermore, Alanna finds out that she is the king's cure and in order for the king to be free from the curse, she has to bond with him in every way, including marriage. Having nothing to lose, she agrees to help the king. Soon, she's falling in love with him. But will her innocent love be enough to save him? Will her passion remain unrequited, or will she finally succeed in breaking the icy walls surrounding the demon king's cold heart?