Disclamer: I don't own PJatO/HoO or Avengers

The Avengering Twin: Percy Jackson/Avengers For years the Jackson twins have been separated, but when they are both forced back into high school they will finally have the chance to meet once again. All Percy and Merida wanted was peace and quiet-though Merida also wanted to stop being compared to Princess Merida-though nothings ever peaceful for a Jackson.

Chapter 10: Aligns and a Lot of Pain

Just as she turned around again she saw Pietro's gloomy smile fade and change into a huge smile before the whoosh of fast wind accompanied by silver and blue streaks, was left in his place. Annabeth just hoped that he remembered her theory, that the Merida that was with them now most likely wasn't the real one…Percy and Merida shared a look both knowing that they had no choice. Merida looked away and straightened up and let the aliens push her along.

Third Person POV:

Seven Demigods and a Titaness stood in front of the Olympians.

"That will not be happening," Zeus boomed, striking the master bolt against the floor of the room.

"Please Lord Zeus," Annabeth pleaded, "you don't understand what will happen."

"I understand perfectly," Zeus said and the demigods and Titaness let out breaths they didn't know they had been holding. "The mortals will cause everything to fail."

The demigods and Titaness started to speak all at once trying to change the king of the gods mind.

"Silence!" shouted Athena bring a hand up. Once they had calmed down Athena lowed her hand and spoke again turning to Zeus, "father, I understand you do not wish to align with the mortal heroes."

Zeus grunted in response but let Athena continue. "But alone we will not win; Tartarus had aligned himself with Thanos. And to defeat the two of them we will need the help of the mortal heroes."

"We need not the help of the mortal heroes!" Zeus shouted.

"Brother," Hestia said looking up from the health. Her voice was soft and brought warmth to the group, "you need to let your pride go."

Zeus' face scrunched in fury and he gritted out, "these are mortal's sister. They can't do what we need them to do."

Hestia sighed, "brother. Please listen to me let your pride go and let the mortal heroes help."

Zeus opened his mouth to ague again but Hestia wasn't finished speaking. "Along with the Norse."

Zeus gripped onto the master bolt hard enough so that his knuckles turned white. He looked ready to throw it at Hestia and the people who watched the two, feared that he would. Hera laid a hand on her husband's shoulder. Zeus lessened his gripe but the anger still showed on his face.

"Zeus," Hera said trying to make her voice calm and soothing. "Calm down, we cannot turn on one another."

"We cannot align ourselves with the Norse," Zeus spat out.

"Brother please," Hestia pleaded, "let your pride go, we need them."

"Father," Athena added hoping to help Hestia, "Hestia is right. Without the help of both, we will fail in this war. They have already taken two, we need to act." On his own throne Poseidon struggled to remain his posture. He could already feel tears falling down his face.

"I am the goddess of wisdom and battle strategies surely you will listen to me," Athena pleaded using her status to her advantage.

"No," Zeus gritted out.

"Vote," Hera said using the last means that she could think of. "Those in favour say Aye."

The demigods and Titaness held their breaths knowing they couldn't take part in the vote, and knowing it was up to the gods and goddesses to see the right way. The majority of the gods and goddesses said Aye, causing those who weren't in favour (Zeus and Ares) to glare.

"Zeus," Hera said looking at her husband.

Zeus gritted his teeth and spoke bitterly, "we align with the mortal heroes and Norse." He stood up and striked the master bolt against the floor once more before disappearing leaving the scent of ozone and the air after a storm.

"Do you know if they are ok?" Poseidon's croaked voice asked. It was the first time he had spoken since finding out that Percy and Merida were taken. His face was streaked with tears that still fell.

"Honestly Lord Poseidon," Piper said knowing it was best to tell the truth, "we don't know."

Poseidon nodded before also standing up and disappearing only instead leaving behind the scent of the ocean. Annabeth bowed her head so that they could see the tears that were starting to fall from her own eyes. She felt someone wrap a hand around her shoulders and turned to see Hazel looking at her. Annabeth nodded to tell her that she was fine, and Hazel gave her a squeeze before nodding and walking back over to Frank.

"Why does Uncle P seem so worried about the Avenger?" Apollo asked.

"Oh good," Hermes said happily, "someone who had the same thought."

"I thought it was obvious," Artemis said.

Hades murmured something about being 'the only one who kept the damn oath.'

Both Hestia and Hades were here due to becoming official Olympians after the Second Giant War. When the gods had given the demigod's gifts for fighting Percy had asked them to allow Hades and Hestia to become official Olympians.

"Well it's not obvious to some of us little sister," Apollo defended and sticked his tongue out at Artemis.

Artemis clenched her fist and glared at her twin. "I'm not your little sister, and it is obvious; but you're too much of an idiot to see."

"Even I can see if idiot," Ares snarled.

"Not good to lie," Apollo sang. Ares glared at his brother but choose not to say anything remembering that Apollo was the god of truth.

"Nice one bro," Hermes and Apollo fist-bummed.

"Boys," Artemis murmured.

"Love you too sis," Apollo and Hermes called.

Artemis glared.

"So what was obvious?" Apollo and Hermes asked in sync ignoring their sister's glare.

"Why Barnacle Beard cared too for what happened to the girl as much as he cared for what happened to his son," Athena answered.

"Ok," Apollo said slowly dragging the word out. Hermes looked at the battle goddess eyes-wide realising what she meant.

"You mean to tell me Poseidon, had another," Hermes exclaimed.

Ares looked up from his knife that he was using to clean his nail with and looked at Athena also. "No way could he have another child without Zeus knowing."

Apollo looked at Athena understand what she had figured out, "I can't believe I'm saying this but I'm with Ares. Zeus would have figured out and killed her."

Annabeth looked up deciding to come clean. "Not necessarily."

Everyone looked at her, with a mix of expressions. Some showed confusion, others showed shook or wondering. She looked at Piper who nodded, backing her up on her decision to tell them.

"Annabeth," Demeter said, "what are you saying."

"A couple of years ago, Percy told me something about his past," Annabeth swallowed; there was no going back now. "He wasn't an only child he had a sister. A twin. They were separated when they were five. We figured out that Merida was her."

"Dude no way," Leo laughed. Annabeth nodded.

"It's true."

Leo's laughed died and everyone looked at her in shock.

"Piper knew. I told her after Wanda started figuring it out and asked her about it."

It was Piper's turn for everyone to look at her in shock.

"I asked her not to tell anyone. I wasn't sure if Percy really wanted anyone to know."

"How did she remain hidden from us?" Athena asked.

"I don't know mother," she answered, "she's been using her powers for years, it's a mystery."

"So Percy really has a sister," Leo said. Annabeth nodded.

"No joke." Annabeth rolled her eyes at Leo and nodded again.

"So what do we do now," Jason said changing the subject. No one could blame him it was hard for them to progress what Annabeth had just said.

"We align with that of the Avengers and Norse and fight," Hera said, "you will tell them."

Annabeth glared at Hera, still mad over what had happen months ago.

"And we shall tell the camps," Hera finished and flashed out.

The demigods bowed once more to the Olympians and left Olympus to tell the Avengers.

Inside the elevator Frank voiced the question they were all thinking.

"How we are we gonna tell them?"

*~*T.A.T*~*

Third Person POV:

Percy hit the ground hard and with a moan. The cuts that littered his body hurt like nothing he had felt before. Not even versing the arai was as bad as this. He let out another groan as he moved to plop himself up against the wall.

He heard movement of to his side and turned his head just in time to see flaming red hair and blue and green fall to the ground.

Merida pushed her hair back and lay with her stomach to the floor.

"You stay there and you'll freeze to death," he croaked. Gods how it hurt to even talk. His throat was raw and scratched from the shouting he had been doing.

"Freeze to death anyhow," she replied her voice muffled by both her hair and the floor. Her voice sounded rasped like his and he knew she had gone through what he had.

"Yes but you'll freeze quicker like that," he joked. Of all the times he needed to joke he figured now. When they had just gone through hell and torture.

"You ok?" she asked ignoring his try at humour. She slowly moved her neck so that she could look at him, but with her hair in her face it was hard to see anything well. She wanted to move it but she didn't have the energy nor the strength.

"Could ask you the same question," he answered. She saw blood running down one side of his face. His T-shirt and jeans slashed in multiple spots all with blood dripping from them, his right arm held a large gash going from his elbow to the palm of his hand, while his left was also littered with cuts. She felt bile rise in her throat and forced it down. She imagined a sadistic laugh in her head; forgot about freezing to death, the blood loss would kill them.

He also looked at her wounds. Some were much like his, she also had slashes littering her body, and he could see multiple whip like slashes on her back, he couldn't see her face but from the amount of blood that was dripping from her hair he knew that she also had cuts there. He looked at her face where two dull colours of sea-green could be seen. He forced back tears. Forgot freezing they'll die from the blood loss soon enough.

"Do you think will die here?" she asked. Her voice was void of hope.

"No," he answered. He remembered when they had been younger; she was always the one with more hope than him. How much had changed through the years.

"They'll get us out remember," he said remembering the words she had said.

She nodded her head, but inside she was losing hope fast. Would they really get them out in time or would they be dead by the time they got here.

"Gotta have hope princess," he joked. His laugh was strained at the end and she frowned.

"Don't strain yourself," she scowled, "and don't call me princess."

She couldn't help it a smile tugged at her mouth and soon she was smiling along with him, but she didn't laugh.

"Not my fault you look like her," he defended.

"Just to be clear," she said, "if you still have Mr Bearston. I'm hiding him."

Percy looked at her in shock, "you wouldn't."

This time she couldn't help it she really did laugh, and just like Percy's it sounded strained. "You still have him."

"Yes," he answered sounding surprised that she would even think otherwise. "Mr Bearston has been there for me forever I'm never letting him go."

Her laughter faded and guilt settled in. Percy's smile fell realising what he said.

"Mer, I'm sorry I…I never meant it like that."

She nodded, "I know Perce, but I still can't forgive myself."

Percy looked at the dull sea-green eyes, "It's not your fault Mer."

She didn't say anything and looked at the floor, the guilt piled in her stomach making her want to throw up again.

"When do you think they'll come back?" she asked trying to change the subject.

He looked at her worried but she didn't meet his eyes choosing to stare at the floor again. He shrugged but answered, "don't know."

He saw her hair move in a nodding motion. He felt guilt pile in his stomach he had meant what he said, it wasn't her fault that she couldn't be there. He started blaming himself; for not looking hard enough, for giving up hope, and for not seeing what had been right in fount of him the whole time.

He heard her say something repeatedly and he tried to listen in. He only caught snippets but he figured out what she meant.

"Shouldn't have let go, shouldn't have trusted her, should've fought harder."

He closed his eyes. He wanted to say something, but he knew it wouldn't mean anything. She wouldn't listen.

"It's not your fault," he said softly. He wasn't sure if she heard.

In her own cell she did her the words he said, but she couldn't bring herself to believe them. She shuffled her position becoming uncomfortable, with each movement a searing pain shot through her back making her hiss in pain. She clamped her mouth together so that he didn't hear her.

She shuffled slowly moving so that her back was to the wall. She lay on her side staring at the cell door. When her back came into contact with she bit her lip to muffle her scream, it hurt like hell but the coldness also felt good against her flaming back.

She looked around and saw him staring at her worriedly; she ignored his gaze again and played with the hem of her ruined shirt.

He cradled his right arm and looked at her. He could tell moving had caused her a lot of pain but she was determined not to show. He wanted to ask her if she was ok but he knew it was foolish; she wouldn't listen and wouldn't even answer.

He closed his eyes and tried to ignore the constant pain, winching he leaned his head against the wall. She also closed her eyes and tried to will away the pain, also to no avail. They both shifted the silence becoming more awkward with every passing moment.