Chaos (The Ultimate Crossover)

Stormy summer

Being inmortal is an advantage and a disadvantage. You see, you can live for ever and stuff, but you stay a 16 year old for ever. I've been sixteen for 5 years now. I hate it. I could never have a girlfriend because she will wither and die. I hate being like this. But hey, I'm dead. I was staying at Annabeth's for the holidays. Christmas was specially hard because I counted every year.
"Stop being depressed, Magnus. Cheer up!" Annabeth said. She came into the treshold of the apartment with Lily, her daughter. "Do you want to hold her?"
"By Odin's beard, no! What if I hold her wrong or I drop her or-or" I said.
"It's okay. I trust you". She handed me the baby. She was I think 1?
"Manu" Lily said. Holy Hel, she said my name. Well sorta.
"She said my name." I was shocked.
"Of course. Your her uncle and Godfather." Stop. What?
"Wait. Seriously?"
"Of course! If you want to. We don't normally do this but what the hell, right?" I was going to be someone's godfather.
"Yes! I would love to!" Ring, ring. "Jack, you do know you don't have to say ring ring everytime you need something?"
"Sorry, boss" Jack said. You see, Jack is my talking sword. He transforms into a rune pendant. I wear him around my neck so it will be practical. I handed Lily to Annabeth and removed my ass off the couch and away from the baby. Just then, Percy came inside with the other one, Michael. Michael Jackson. Ha, sweet. Jack grew in my hand.
"What's wrong, Jack." I asked the sword.
"Someone's entered our apartment in Boston!" Jack said. He was like a walking alarm.
"Okay. Prepare for cut." I said.
"Where are you going, Magnus?" Annabeth said.
"I'll be back. Promise. Someone just broke into my apartment. Nothing I can't handle." I stormed out of the house. I began to run at top einherjar speed. I reached Cemtral Park in a matter of minutes.
"Jack? Are you ready?"
"Ready as I'll ever be." I got Jack and concentrated all my force and Jack's combined into a single blow that would tear the fabric of reality. Riiiip. A gash appeared. I jumped in with sword in hand.

I appeared in the Boston Harbor. I fell to my face into a huge  pile of snow. The Christmas lights shone above my head as I made my way to Commonwealth avenue. I had to run at my top einherjar speed but I was exhausted by the gash so instead I grabbed a cab.
"To 1087 Commonwealth Avenue, please". We drove for about 40 minutes. I payed the driver and began making my way to my apartment. Sure enough, it was opened. A girl with spiky hair laid there with blood all over my carpet. I picked her up and called an ambulance. At the slightest jerk of her hand sparks flew and the whole apartment aor maybe the whole building lost power.
"Jack, check for vitals."
"She's still alive but with a huge gash on her head."
"Could we fix her in here?"
"Don't think so, jefe". After about 30 minutes, the ambulance arrived. They took her to the hospital and I drove with her. She seemed so graceful and beautiful. No, Magnus, you can't date girls remember? What if you fall in love and you don't age and she does? Oh gods, my life is weird. We arrived at the hospital and they took her to surgery.
Ring, ring. My phone. "Hello?"
"Magnus! What happened? Are you alright?" Annabeth.
"Yeah. Guess what? I caught the person who barged into my apartment. She was a girl about 16 with short, spiky, jet-black hair. She was covered in blood. I'm at the hospital right now."
"What? Percy, it's Thalia! She's injured!"
"Wait, who? Who is this Thalia?"
"She's like my sister. She is the Daughter of Zeus." That's why her body sent sparks.
"Ok. Um, I will stay here with her. Don't worry."
"Are you sure?" She began to sob.
"Yeah. I'll bring her to your house. Stop crying. Oh the doctor's coming. I'll call you later."
"Are you the young man who came with the black-haired girl?" The Doctor said.
"Yeah, it's me. What happened?"
"She has a mild concussion. She will be alright. Woud you like to see her?" What do I do now? I promised to Annabeth. I can't back down.
"O-okay. I she conscious?"
"No. But in a few hours she will wake up." He took me to see her. She had a grace that atracted me. I told the doctor I will be staying with her all night.
You know what I hate about sleeping outside Valhala? Dreams. I was dreaming about Helheim.
It was hot and steamy. I was floating in midair but noone seemed to see me. I wasn't in control of my body. It was as if I was being pulled in. I saw the dead being free. Then there was the Castle of Hel. I hated that bitch. Hel was one of the hundreds of gods wanting me dead. She was the goddess of the underworld.
The doors opened into a horrific seen. Hel apparently was being forced to kneel down to a blond guy.
"Where is it?" He said. I know that voice. He grabbed Hel and launched her into the sky and with the other hand he swatted her into an obsidian wall. "Where is the key?!"
"You will never get it!" She spat what appeared to be blood on the obsidian floor. The bone chandelier that clanked above was looking a bit rusty. "I promised Hades I would never give it to you!"
"Give me the key or you'll die." He grabbed herby the neck and began crushing it. "If you don't give it, I will have to take it from your rotting corpse." Just then Hel stopped moving. He turned to face me. He didn't know I was ther but he stared straight at me. He grinned and the chandelier fell. His face illuminated. I saw a scar in his upper lip. I knew him. He was Jason Grace.
I woke up to find that I was lying on the floor. Thalia was beginning to move. "Hey, hey. Easy there." I soothed her.
"Who are you?" She said.
"I'm the owner of the apartment you broke into."
"Oh. I'm sorry. But being chased by a chimera through Boston wasn't fun. I ran into your door and the chimer hit me inthe head before I killed it. Where am I?"
"Your in the hospital." She began to move. "Whoah, there. You have a concussion. Try to take it easy." I moved to the pithcer of water and gave her some.
"Thanks." She said as she began to drink.
"Don't mention it. When the doctor gives you green light, I'll take you to my cousin Annabeth." I told her.
"Who are you?" She asked.
"My anme is Magnus Chase, Son of Frey."
"And who am I?" She asked as if she didn't know who she was.
"What is the last thing you remember?"
"The chimera fight. But I don't know what I was doing in Boston, or my name."
"Well, your name is Thalia Grace and your the Daughter of Zeus"