RWBY x Ben 10 crossover

Red like Roses

white...and black...two things both interfering with my senses, on one hand all I could see was black but on the other all I could hear was white...the ringing was so loud I couldn't hear anything over it as I stood still and I felt something...attach on my arm...no wrist...it was a familiar feeling and yet...a scary one...I knew what this was...

Suddenly I could see but what I saw was a reflection and as I stepped forward I saw my suspicions were correct, my omnitrix was on my arm again and like at the start of my experiences with it...I couldn't take it off, I started pulling at it when the watch turned on and I looked at it and felt something new from the watch and I instinctively pushed it...

I felt my body shifting...my feet started losing toes, my hands lost a finger and I felt four...THINGS spread out of my back, as I looked down I saw my skin was now blue and the omnitrix was plastered on my chest, I looked up to my reflection and saw how I now looked as words flooded my mind.
"Big chill...he is a necrofriggian...with him you can fire out a cold gas out of your mouth and can fly with the four wings out your back..." The unrecognisable voice said as I saw the four wings that were now sprouting out my back and as I breathed onto my hand it was true, a cold gas was flowing out of my mouth.

As I was just getting used to the feeling my body started morphing once again...the wings retracted themselves and I felt spikes come out of my shoulders, my face suddenly felt hot as I looked down at my now swamp green skin which had the omnitrix in the same place as before. I looked into the reflection once again as the voice spoke for the second time. "Swamp Fire...a methanosion who can shoot methane into fire from the palm of your hands" The voice said as I shot fire out of my hands and nodded along.

My body started growing and growing as my skin felt scaly and my teeth gritted, my scales were now orange as my hands and feet felt stubby...everything about me was huge which reminded me of four arms but I was way bigger. "Humungousaur...a Vexasaurian who has great physical prowess, he may be slow but his power and defense makes up for it" I knew this voice was correct as I had to get on my front to be eye to eye with the reflection and my body shifted once again.

My body finally felt familiar as I spoke "Finally someone familiar..." I smiled softly as I was standing up on two feet, my hands were bulky but not as much as Humungousaur and my head had something ontop of it the voice was about to speak until I spoke up "Diamond head, a petrosapion who can shoot diamonds, I think I know what he does" I smiled as I shot diamond crystals out of my hand. and I Slammed the omnitrix again having the feeling I knew the next couple Aliens.

I smirked to myself as I felt my feet turn into wheels, my hands turning into three finger claws and a tail sprouting from my back, with the omnitrix on my chest I shouted "XLR8, a kineceleran who focuses on speed" I smirk as I started speeding along.

I transformed again as I slowly shrunk as I lifted my arms and fist bumped "and Grey Matter, a galvan who is small and good for infiltration" I smirked as I started crawling around and looked back at the reflection "That's it for now...ill talk to you another time when you need more 'help'...now go and join beacon"

Suddenly I opened my eyes and I was in the middle of a dead but lit street, I looked around and I saw I was infront of a storefront "From dusk till dawn..." I muttered to myself as I looked at my wrist and saw the omnitrix there "So we really are back in business...WOAH!" I gasped as suddenly a man got thrown out the window front and a girl in a red cloak jumped through said window.
"Get her" a man with red hair in a bowlers cap pointed as I ran into a nearby alley and slammed my omnitrix and turned into what the voice called...
"BIG CHILL!" I shouted as I crawled towards the fight and stood beside the girl in the red cloak and the men in business suits started shaking.
"Boss what kind of Grimm is that?" One of the guys said as I froze him solid.
"Now come at us!" I roared as the girl in the cloak was staring at me.
"So cool..." The girl muttered as suddenly we got surrounded by smoke and as we looked the boss was climbing up the side of the building and I started flying towards him with the cloaked girl close behind.
"You're not getting away!" As I landed I slammed my omnitrix and turned into Diamond head "DIAMOND HEAD!" I called as the cloaked girl started shooting at the man who was now in a helicopter.
"Get them!" The man growled as someone in a glowing dress walked to the helicopter door and started throwing fire at us but before it could hit us...it got blocked.
"Stand back" The woman behind us said as she fired crystals into the helicopter and I joined in.
"Now you are talking my language!" I smirked as the two started flying away and I clapped my hands together and I turned to the two women I was with and the cloaked girl asked.
"Can I have your autograph?" To the woman who had protected us who just glared at me.

"So who are you?" A man with silver hair and glasses asked me in my diamond head form as I started sweating.
"I am diamond head the hero!" I replied hurriedly.
"Okay...well what about him?" He asked as he brought up an image of me turning into big chill in the alley way.
"Uhh I don't know him" I replied as he played another video of me turning from big chill to Diamond Head.
"Really now?" He asked as I sighed and turned back human.
"Im Ben Tennyson, I'm 17 and I can use this watch called the omnitrix" I sighed as Ozpin leaned in,.
"I see...so what does the 'Omnitrix' do?" he asked out of pure curiosity.
"It allows me to transform into different aliens who I name such as Big Chill and Diamond Head" I explained.
"I see...so whats your alliance?" He asked seriously.
"I'm on the side of good...don't worry I wont go attacking innocents" I smiled as he sat back.
"Well ben have you ever considered joining a hunter school?" Oz asked as I nodded remembering that...Beacon Academy the voice said.
"Yeah I have one...in mind" I replied.
"Well would you like to join MY school...Beacon Academy...?"

The next day

I was on A ship looking out of the window as the ship slowly started descending into the courtyard...of beacon academy