A/N: I do not own adventure time. So with that enjoy!

Chapter 9: Battle in the Heavens

Fionna's POV

Marshall dashed towards the castle axe in hand and before we knew it the annoyed screeches of the ravens were heard ripping through the sky. The ravens darted towards us like arrows and I felt their feathers brush my arm as they flew by. They circled around about to dive bomb in again, but this time I was ready. With my sword in hand, I rushed towards them with immense speed and grace. As I charged I swung my sword right to left and in an instance I was surround by an explosion of black feathers dancing around my head and the bird's lifeless body's plummeted to the clouds. I looked over to Marshall who gave a congratulatory smile. Aggravated the two birdmen left their perch and came right for him. He charged in axe cocked to the side and gave one clean swing slashing the black bird across its neck. It let out a horrific yelp before retaliating back, cutting Marshall with its razor sharp wings. The brown bird then joined in, grabbing Marshall's shoulders with its talon digging deep into his pale flesh, while the black creature continued with its barge of cuts all over his body. Marshall yelled in agony and as I tried to come to his aid I was stopped by 2 lone chickens.

I must admit the thought of the chickens trying to stop me made me chuckle I flew past them not taking them seriously. That was a mistake… Before I was able to get past; the cute little chicken grew to 6 foot behemoths. Their beaks grew razor sharp fangs and green ooze dripped from their mouths. Their eyes turned completely black and they let out a screech that made my ears ache. I got over my shock and took off flying, narrowly escaping their bites. I tried to think of what to do next; the chickens were right behind but luckily they could not keep up with my speed. I looked at the birdmen still thrashing Marshall and had an idea. "They might be stronger but I bet they are still just as dumb," I thought to myself. I flew over to the birdmen as fast as I could, heading straight to the chest of the black one, with the two chickens still following close behind. Just as I was about to ram right into the bird I bee lined to the right, while the two chickens ran head on into their bird master. They all hurdled down to a nearby cloud and this was Marshall's chance to escape.

Marshall's POV

"That Fionna was a master of her craft." I thought with a smile. As soon as the chickens hit the black birdman I lifted my arm holding tight to my battle axe, swung it above my head and sliced off the foul beast's talons. Pain filled screams rang out as blood dropped down on my head and the now badly wounded bird tried to retreat. "It's not that easy taking down the Vampire King." Just before the birdman was able to escape I landed on his back. I took my axe bass and swung it on my back. With my hands now free I reached around his neck while my feet were carefully positioned right above his wings. I let out a quick whistle as the creature looked back at me with fear in its eyes. A huge smiled crept across my face. "It is always good to see that glint of fear right before you finish off your opponent." With that I snapped the bird's neck. As its limp body plummeted down I leaped of its body grabbed my axe in my hand and looked for my next victim. My victory was short lived as one of the chickens came charging for me its teeth reaching for my neck. I threw the base up to my face as it chomped down on the neck of my guitar. I held it there trying to keep its dripping mouth away from my body. The paint was starting to fade around the nasty green ooze and I knew then I might have been in a bit of trouble. Its disgusting saliva ran down my bass and then on to my hand, which burned, making me lose my grip. My bass fell from my hand onto the cloud below. I grabbed the chicken by its shoulder trying to keep it from biting me. My grip started to falter when I saw a large blade stop right at my belly button, while the chicken looked down in disbelief that it had been impaled. The sword retracted back as the lifeless fowl fell down below like a fallen angel descending from heaven. My eyes were wide, when I saw my bunny sitting there smiling. "I hate chickens," She said as we both laughed. I flew down to recover my axe while the final chicken and birdman retreated to the castle. "Let's finish this," Fionna smirked. With that we went after our final two foes.

Fionna's POV

We soared with a new sense of purpose towards the castle. I was done playing and it was time to take them down. I rammed right into the chicken knocking him of the top of the castle. We both fell to the base, wrestling for dominance. The chicken finally landed on top of me biting into my shoulder, between its razor sharp teeth shredding my skin and the burning acid, I could not help but let out a horrific scream.

Marshall yelled "Fionna, are you okay?" I did not answer the pain was too intense. I saw him fly down in his demon form sinking his teeth into the neck of the chicken. He flew up, taking the chicken off of me allowing me scurry back. The poor fowl fluttered around screaming and flapping until Marshall violently shook the beast in its mouth snapping its neck. I shuttered a bit but was thankfully that Marshall was on my side. He finally sucked the blood from the chicken, tossing it to the side.

His eyes grew bright, "My Glob I have not had blood in such a long time, I forgot how good it made me feel." With his new found energy he dashed to the top of the castle where the last birdman was perched, pouncing on top of it. Before I was able to completely get up to my feet I saw a human head fall right in front of my feet. I let out an unexpected yelp and fell back on my butt. I looked up at Marshall, still in his demon form, as he let out a wild and loud howl. "I love it when he gets primal, it's just so damn sexy," I thought with a smirk.