The World is in Danger. When Loki teams up with the worst in the different myths, the modern heroes are worried that this may not only change their lives, but of everyone around them, and could result in a war, a war that will destroy everything, a war that must be prevented.

When DunBroch is suddenly attacked by a dragon, King Fergus is thrown into action, facing an enemy he never thought he would have to face again. With his kingdom under siege and no backup, DunBroch is overthrown, Merida being the kingdom's only hope. With the help of a dragon expert and Viking chief, the duo work together to take back DunBroch and restore peace among the four clans

In this AU: Merida has lost her memory and has lived in Berk for 5 yrs becoming a strong viking girl each day, when she discovers that Hiccup shut down a Night Fury and set it free, she starts to question everything she was told about dragons and she becomes more amazed by Hiccup then she did before. Sorry that the summary is short but hey nobody is perfect

"Sometimes even the Greatest Love has to end, so your Destiny can Begin." Her voice was hushed, but clearly heard in the quiet of the cavern... (The Big Four. Hogwarts AU, Fifth Year. No Pairings.)

"Honestly, we're the dream team. Let's take over the world together." Jack grinned, throwing one long arm around Hiccup's scrawny shoulders... "Come on, Hic! You and me, just like we always planned!" (The big four, Hogwarts AU, Fourth Year. No pairings.)

Merida, Jack, Elsa, Hiccup, and Rapunzel, are ready to begin their seven-year education at Hogwarts. Little do they know, a centuries-old evil is rising to power. If it isn't stopped, it will destroy everything they once loved. Collab. (Big Four/ROTBTFD Hogwarts AU)

"It's tradition, mom says," Merida said scornfully. "It's just marriage, not the end of the world!" Merida repeated, feeling the infuriating stinging at the back of her eyes again. She was not afraid. She was not going to cry. (The Big Four. Hogwarts AU, Third Year. No Pairings.)

In order to make peace with the Berserker tribe, Stoick has agreed to help Dagur with an enemy known as DunBroch, but Hiccup does not agree and sets out to prevent the battle or defend the Scottish kingdom with some unlikely help

On her way to a peace treaty in the Orkney Isles Merida and her father are attacked at sea, when she comes to she finds herself surrounded by Vikings. With no knowledge of her Father's fate she tries figure out a way to get home, but when danger comes to Berk she must work together with the Viking Hiccup in order to change the fate of his village, as well as her homeland.

"Can you believe it, Pascal?" Princess Rapunzel Corona giggled excitedly. "My second year at Hogwarts! Oh, I can't wait to see Merida and Jack and Hiccup!" (The Big Four. Hogwarts AU, Second Year. No Pairings.)

It's a game to die for: a charming blonde with 70ft worth of hair; a 'career' who couldn't - wouldn't kill; a determined redhead eager to make her mark; a shepherd boy the Capitol loves and a cryokinetic mutant who'd do anything to protect her sister. The Big Four Frozen/ROTBTFD Hunger Games AU, with deviations. Other Disney Dreamworks people too.

"We'll always be friends forever, won't we?" Jack grinned, standing on his knees in his chair so he could ruffle Hiccup's hair with both his hands. Hiccup laughed and started wrestling back. "Yeah, forever." Hiccup promised. (The big four, Hogwarts AU, no pairings.)

Nobody wants another apocalypse, but when Percy Jackson and the Kane siblings meet, the world might be in trouble. However, the end of the world in the universe of the Greek and Egyption gods isn't the only thing wrong, because a few demigods and our favorite magicians are seeing ghosts. *Second in The Crossover Collection Series* Note: -EVENTUALLY BECOMES A MULTI-FANDOM CROSSOVER-