Eren does not become the Attack Titan, or any of the Nine Titans. He arises instead as the second coming of something far more powerful, from before the dawn of time: The One who is Many, the Golden Demise, the King of Terror, the God of Hate. But can he bare the weight of this power or be swallowed whole by a true Titan, by Ghidorah?

Alone in the Paths Eren is haunted by the memories of the Rumbling and everything that happened around it. Out of nowhere a unique 'Doctor' ends up in the Paths claiming that he shows up where ever people need help. This 'Doctor' wants to help a closed off Eren face his demons but has to face his own past to get through to Eren. Requires no knowledge of Doctor Who to read.

"Annie watched patiently, waiting for her friend to awaken, but when a full minute ticked by, she was positive he had fallen back to sleep again. Should she intervene? Any good friend would help him save his day. First and foremost, however, it would put her in his favour. After all, it couldn't be that hard to wake a sleeping giant, right?" Sequel to "Attack on Bertl"

Heavily based on Random Crossovers' Enemies of Humanity's Past After the Colossal Titan suddenly appears and kicks the wall in, a gigantic, mysterious cyborg rises from the grave to save humanity just as he had done in the past.

Hermione, in an effort to improve the Wolfsbane potion, becomes trapped in the world of Attack on Titan - Armin x Hermione

Scientists from Belos Enterprises discover a very strange spine-like creature. One that has the power to alter biological beings around it. What happens when a young girl named Luz Noceda is chosen by this creature to become the progenitor of a new race? Crossover: "Owl House AU" and "Attack on Titan"

After waking up in a strange world with near total amnesia, and being told he had rampaged through a city block, he decided that he wanted to be a Hero.

Some members of the RWBY cast are summoned to watch alternate versions of themselves in the world of Attack on Titan.

The Battle of Edmonton was won, though in its aftermath, Gundam Barbatos and its Pilot were lost in an apparent explosion caused by the Graze Ein that alledgedly destroyed them both. In actuality, however, it had simply sent the Gundam and its Pilot to an entirely new world, where they now fight for a new cause, and with new friends. (Slow burn story)

When Gordon Freeman accepted the G-Man's deal, he had never expected his next assignment to be placed in another world where humans were hunted down and eaten by giants while backstabbers and undermines plague what remains of humanity. All of it tendering on a world on the verge of collapse and ruin, but the right man in the wrong place can make all the difference in the world.

"T-This…This wasn't supposed to…why…me?" Those were the last words Mukuro Ikusaba whispered in a cruel world where she was a slave to a dream that brought her nothing but pain, death and despair…only to wake up in another cruel world full of pain, death and despair. Although...this time, there was something else, something…beautiful. (Cross-Posted on ao3 with the same username)

After three years the world begins to adapt to three major species roaming freely. Unfortunately on Paradis, there isn't much room for everyone. While on a scouting mission, Eren and company discovers a secret about Marley, Monsters, and a history untold.

Her first clear memory was waking stark naked and half-submerged in a lake, the sight startling her into moving. There was no pain, no open wounds. Nothing that suggested she had been assaulted in some way – just a weird steam that was slow in dissipating. But her memories had been messed with. That much she was certain. (COMMISSION)

Two years after the Promise Day, Edward and Alphonse had believed they were now free to lead normal lives, until one day they were suddenly snatched from their home by the Truth and sent into another world. There they must help a group of people battle an enemy which they do not yet understand but who seek to annihilate them.

This is a Challenge in AOT x Command and Conquer

Percy broke a promise he made on the River of Styx and has a steep price to pay. Banished to a new world and thrown into another 'world ending' conflict, witness Percy struggle as he tries to make sense of what's happening, adapts to his new environment, and attempts to unravel the mysteries of yet another monster infested world. (Rated M because I don't want to limit myself)

A mysterious portal has been used by an unknown goddess, who wishes to save her cursed world. She uses her powers to bring in beings from other dimensions, and help save her people. However, not all beings are brought by her, and travel through the portal by chance. What will these characters do? Will they lend their hand, or bring about greater destruction?

A version of MHA, but with Titans from Attack on Titan. A story that tries to justify a senseless crossover. Chapters will be short.

It all started between the fight of Kaneki and Amon, fighting along with their quinque and kagune. As the fight goes on, a black hole suddenly appear between the two, sucking them both in the dark abyss as they both drift off to a dreamless sleep. Opening their eyes, they found themselves in front of a huge giant, smiling at them intently. Where are they? Welcome to the outside of

Possibility: Something that is likely to happen or can be confirmed. Impossibility: Something that can not happen or be confirmed. What if: An alternative to what is or what could be. This is a what-if, an alternative to what was by creating what could be. A young man that didn't belong, pleaded by people that belonged once upon a time, and a reaction that becomes. Dare to defy?

In Little Whinging, there lived a boy named Eren; he, along with his friends Mikasa and Armin, have magical powers. One day, they met and helped a boy named Harry Potter, and together they will experience all that the magical world of Witchcraft and Wizardry has to offer. Harry Potter AU.

Up for Adoption. "Hey, are you alright?" "Who are you?" "I'm Sora." "Donald Duck!" "Name's Goofy" "What's your name?" "My name is Eren Yeager. Wait! Where's Historia? Mikasa, Armin, and Captain Levi?"

Never in two thousand years did Eren think this could happen. When he saw the future during the medal ceremony, he bitterly accepted that he would let himself die at Mikasa’s hand. What he didn’t see coming was his return to life in a time that is so far beyond it’s history. With nothing tying him down in the world or puppeteering him, perhaps it’s time for this Titan to retire.

With the advancement of technology and the dwindling of the Titan's influence, Marley is desperate to maintain their seat of power. But what they don't realize is that their quest for power may gain them an enemy worse than the people of Paradis island. (Talokan in the world of AOT)

The Imperial flag reigns across the galaxy. Some join the Empire in hopes of keeping the galaxy secure, others see the flag as a sign of evil. From the ashes of the Republic, a Rebellion is formed and they can take anyone who is willing to fight. One group of soldiers have come together for their own reasons, but what unites them is the fight against the Empire.