Underworld Fanfiction Crossover Novels & Stories

Nathan Williams is dangerous. He can be your worst nightmare if you get on his bad list. He is a vicious, cruel, ruthless, merciless, and heartless killer. He is New York most dangerous mafia lord in the disguise of the most successful CEO.He is known as Scorpio in the underworld because of his obsession with the deadly animal.Sophia James was leading a simple vanilla life when all of sudden her world turns upside down. She is an innocent, sweet and pure soul but that’s what attracts the darkness the most. She is the source of light to brighten up his dark world and he has no intention of letting her go if it means to blackmail her to last extents.....

It's my third day of being a ghost, and I feel like I'm going to starve to death again. The underworld messenger takes pity on me because I'm a child and secretly tells me that people like me, who suffered grievances and died with resentment, have to stay by the sides of the people who loved us most in life. Then, we survive on their "guilt". I lower my head and narrow my eyes. I choke up and say, "You might as well just leave me to starve." My mother hated me to the core. Why would she ever be guilty over my death?

When a dullahan from the fae realm shows up on Mike Radley's property, he doesn't know what to expect. He didn't expect to learn that his banshee friend Cecilia has become a prisoner of the faerie queen. He really didn't expect to learn that his home contains a portal to the Underworld itself. And he definitely didn't expect to do battle against the duplicitous shadow man who wants Mike's very soul. With new allies, villains, and monstergirls, things are about to become dead serious. Welcome to Home for Horny Monsters (Book 04). Expect the Unexpected.

A deal signed in blood. A love she never saw coming. Elena Moretti was never a daughter only a bargaining chip. When her cruel father sells her to the most feared man in the underworld, Adriano Romano, the ruthless Mafia Lord , her nightmare takes a deadly new turn. Cold. Dangerous. Merciless. Adriano doesn’t believe in love only control. Yet the girl he bought refuses to bow. Bound by a deal, trapped by desire, Elena must survive the man whose name makes enemies tremble…and whose touch burns with dangerous warmth. Will she lose herself to the chains he forged or make him fall to his knees?

I have to marry my sister’s fiancé in her place. When my twin sister vanishes the night before her wedding, I’m left with no choice but to walk down the aisle toward the ruthless Alpha who rules New York’s underworld and its packs with an iron fist. I knew taking on my sister’s identity wouldn’t be easy. What I didn’t expect was that the hardest part would be not falling for my husband. And as the fragile truce between humans and werewolves begins to shatter, I find that his arms are the only place I can find solace… and perhaps the very thing that will ruin me.

Hayley stumbled upon a video sent to her by an anonymous sender, with just the descriptions of : Mount Olympia, Home of gods, House of Zeus. After few persuasions from her friend, she decides to go check it out. And she gets double the trouble. A long time ago, after the battle of heaven and the Underworld, Zeus and the other gods descended to earth, to keep, guide, and stop Hades from waging wars on the mortals. Their fights, jealousy and bickering doesn't stop on Mount Olympus, even on Earth, they're still the same. And Hayley gets caught up in the middle of it all. After getting struck by Zeus's lightning bolt. Greed, lust, Anger and jealousy comes with the gods on Mount Olympia, in Golden City.

In this dark MxM romance of control and chaos, love is just another weapon — and surrender might be the deadliest sin of all. He hacked the wrong wallet. Now he belongs to the man who owns it. Noah thought hacking a Bitcoin account would be a joke. Lucien Valez, the psychotic king of the underworld, didn’t find it funny. Instead of killing him, Lucien makes him a deal: work for him… and live. But submission comes with a price — and soon, Noah isn’t sure if he’s a prisoner, a weapon, or the obsession of a man who doesn’t know how to love without breaking things. Dark. Twisted. Addictive.

I'm Alessia Moretti, the most arrogant principessa in the entire underworld of Nuvak. All the mafia heirs hope to take my hand in marriage, and yet I can't be bothered to even spare them a glance. Everyone claims that Vito Luca is the only man who can tame my wild streak. After all, the youngest and most cold-blooded Don in Nuvak always deals with the aftermath of the chaos I've caused as well as shields me from all the bullets that are shot in my direction. I thought my passionate love for Vito had melted the icy defenses of his heart. That is, until I overhear him speaking with his subordinate. It turns out that the biggest lie Vito has ever told is the one he had told me in my face—that he doesn't have a loved one whom he can't be with. Only then do I realize that the marriage alliance between our families is nothing but a transaction from the very start. I'm just a tool meant for Vito to get his hands on life-saving medicine. But ultimately, I'm the obstacle that stands between Vito and his first love. Everyone thinks that I'll beg Vito to return to my side while wailing at the top of my lungs. But what they don't know is that I, Alessia Moretti, have always viewed romance as a piece of pretty but unnecessary accessory. Since Vito has chosen his first love, I shall choose freedom. That's when I turn on my heel and leave without casting him another glance. But after I leave Vito's life, the latter, known for his overwhelming influence in the underworld, has gone completely crazy.

In a world where Vampires were being outlawed and ruling everything via the underworld without showing their presence. One day a college girl, who has a big responsibility to save her mother from an incurable disease and also get revenge on her father who is the reason for her tragic life. Also, the only chance she has right now is to become an officer in the Anti-Vampire Outlaw organization and kill the Vampire King Count Dracula and also help her mother from the incurable disease. And on the other hand, the Vampire King falls in love with the protagonist Elle Mona. While the story goes on things get so twisted and suspenseful with some Romance I hope you readers would enjoy it...

Giuliana Ricci fled Sicily seven years ago, leaving behind betrayal, blood and a family that cast her aside. Now she’s back—powerful, untouchable and carrying a secret that could bring the Mafia to its knees. Her son, Giorgio, is not just her heir—he’s the hidden child of Domenico Salvatore, the most ruthless capo in the underworld who is also an enemy. But Domenico never knew and when the truth comes out, alliances will shatter, enemies will strike, and the man she once walked away from will stop at nothing to claim what’s his. Can Giuliana outmaneuver a world built to destroy her or will she finally met the one force she can’t escape?