The Guardians (Rise of the brave tangled dragons) Avengers AU.

Chapter six: Assemble.

Narrator.

Hiro was fighting almost all the army by his own, he wasn't having all under control, but then Jack appeared.

J: Pitch!!, stop this madness or I'll destroy both of you.
P: Jaja, nothing can stop this now the only thing left is war.
J: You asked for it.

Pitch throw himself to attack, they were really equally, Pitch summon a black sword of sand and Jack defend himself with his axe.

With Hiccup, Merida and Rapunzel.

M: We're approaching.
R: What is that? Asked and from all the nightmares, it came a big one like a huge serpent.

Hi: Where were you?! Hiro said a little exhausted and worried.
M: Sorry, I couldn't find a good jet.
H: We need to protect the civilians, Let's land.
M: But What about Jack?
R: Don't worry, he'll be ok.

H: We have to destroy all the nightmares we see and protect the people. Merida, you and Rapunzel guard this street, I'll go the other and Hiro will cover the skies.

M: Haddock, for me it would be an honor. She started to shoot her arrows to the nightmares.

J: Surrender Pitch, your finished. Jack said to Pitch who was on the ground.
P: You really think so. And then....
Drago stabbed him with a dagger and threw him of the mountain.
D: You need to watch your back kid.

When Jack was falling, Hiro saved him from the fall.

Hi: I got you.
J: Thanks.

H: Did you stop Pitch and Drago.
J: No. and his nightmares are too strong for me.
Hi: Jack is right, we need to deal with these things.
R: But with that huge thing.
H: Then we have to..... be heard a motorcycle and it was Ralph.
R: Woah, this is a disaster.
Ra: I've seen worse.
R: Sorry.
M: Now we could use a little worse.
H: Hiro, he's back.
Hi: Then tell him to suit up, I'm bringing the party to you.
Hiro was being chased by that huge nightmare.
H: Dr. Ralph, now might be a really good time for you to get angry.
R: That's my secret Hiccup, I'm always angry.

And then he transformed. And crashed the nightmare.

Hi: Hold on!! Said Hiro and shot two explosive missiles. And the nightmares exploded.

P: Send the rest. He said as more big nightmares came out.

H: Ok, new plan. Our priority is not to let the nightmares infect the people. Merida on that roof to destroy any you see on the air. Hiro as always protect the skies and if you too much nightmares, let them chase you and burn them down.
M: Hey, can you get me there?
Hi: Buckle up Tauriel.
H: Jack tried to immobilize the nightmares, as far as I see, Drago hasn't freed his dragons. Rapunzel you and I stay here to free the battle. And Ralph...... Wreck.

He smiled, and began wrecking and smashing all of them.