RWBY x Ben 10 crossover

Day One

The light sound of chirping filled my ears as a ray of sunshine met my slowly awakening eyes. What a day I had yesterday, starting off with hope, then falling to despair only to rise above it leading to finding myself in this calm room. As I sat up I took in my surroundings, a nice white room met my awakening eyes. Red curtains were pulled back, a wardrobe standing next to the open wardrobe with all my clothes neatly hung inside of it. As I took my first steps off of my bed, and my feet met the cold wood of the floor, I stretched happily as I wandered over to my fridge where some ready made breakfast smoothies met my eye "Bacon and Strawberry Pancakes, that sounds interesting." I spoke to myself as I pierced the top of the smoothie with a straw and took a sip, sloshing it in my mouth as I took in the taste.
"This...is not a Mr. Smoothie but it certainly its good!" I grinned as I heard a light knock at my door.
"Mr Tennyson, classes start in an hour. As a staff member you will expected to be there half an hour earlier so I suggest you get ready" The familiar voice of Glynda Goodwitch spoke from the door, before the sound of leaving footsteps echoed through the halls.
"Half an hour gives me enough time" I smiled to myself as I proceeded to get ready and left my room after I did my dailies.

Walking into the mostly empty, grand classroom my eyes met the closed eyelids of a man in a professor uniform. "Ah Mr Tennyson, youre two minutes late but due to it being your first day I shall let you off." The jolly professor laughed as I approached him, passing by CVFY who collectively let out a sigh.
"Yeah sorry about that, I'm not as used to the smoothies of this world yet then I thought" I laughed alongside the professor as he held out his hand.
"Peter Port at your service, it is a pleasure to meet you Ben." The professor said, dropping formalities as he gave a hearty smile.
"The pleasure is all mine professor." I smiled as I shook his hand.
"Ben my boy, we are both technically professors. Even though you're also a student, you are an assistant professor so no need to be so formal with me." Professor Port smiled.
"If you insist Peter," I smiled.
"So to give you a run down of your duties as assistant professor. Whenever there is a demonstration we make for the class you shall demonstrate first as if to show the students how it is done. For example today we will be letting a student take on a Boarbatusk and you shall demonstrate fighting it." Peter explained as I nodded.
"Got it, seems simple enough. Any suggestions or tips I should know before fighting it?" I asked.
"Any notes are on this clipboard for you to follow. Apart from the demonstration side you will be reading along these notes and providing help whenever I need something brought forward for example a projector or a weapon. Coming here before the class starts will let you get all the items ready for you." Professor Port explained as I skimmed the notes, focusing on how to fight the Grimm.
"Alright, not much is needed for today so I guess Ill just focus on the fighting then." I replied "Thanks for the rundown Peter," I smiled as more students started trickling in.
"Well I suggest you find a seat and read those notes, properly this time." Port teased as I chuckled, finding a seat behind Coco and Velvet who looked back to me.
"You're a staff member?" Fox asked as I nodded.
"Yeah, Ozpin offered me a part time job which also includes me learning the same as you guys, difference is im not on a team." I smiled as I gave a thumbs up to the team I made friends with on my first day here.
"Well, it's certainly better then you leaving that's for sure" Velvet sighed.
"Oh 100%, didn't know upper classmen share classes with us though." I stated calmly.
"Yeah, it's only for the first week though so we can be reminded of the basics we learnt at the start of year one...though I'm not excited for Professor Ports usual shpeal" Coco sighed.
"His usual Shpeal?" I asked curiously

"Monsters...demons...PROWLERS OF THE NICHT!" Professor Port started as my neutral expression dropped to that of a pained one...it felt better eating grangpas disgusting snacks then listening to Peter ramble.
Looking to my side I see ruby nodding off on the next bench over next to her team.
"Who here believes themselves to be of these traits?" Peter said as I stood up and walked next to professor port, understanding the queue the professor had written on the sheet for me.
As I stood up and walked to the professor I heard Weiss's voice speak up "I do!" Weiss said in a determined and slightly annoyed voice.
"Let's test that then. You shall go after Ben here provides his demonstration" professor port smirked as a cage was brought out, a Grimm raging inside of the cage.

As I stood there in my combat outfit, otherwise known as my normal clothes, I looked at the Grimm with determination. A wrong move could lead to people getting hurt so I couldn't do this carelessly like I did when fighting the likes of Doctor Animo. "It's hero time!" I called as I jumped in the air, a green flash enveloping me as my body shrunk in size leaving me as three versions of echo echo and the boarbatusk was let out, immediately one of the echo echoes charged at the boar screaming at it to stun it before a thought I had considered during my rest the previous evening invaded my mind. The two Echo Echo's turned into Ben each then turning into Greymatter and Spider Monkey, the two then looking at eachother.
"Okay Spidermonkey, shoot a web at that position in precisely 3.6812 seconds" Greymatter explained as he pointed to a spot.
"Just tell me when to shoot, I cant count that precisely." Spidermonkey groaned as the third Echo Echo was taken out, disappearing in smoke.
The Boarbatusk and Spider Monkey stared at each other for a second before the boar started to charge at the Arachnichimp.
"Now!" Greymatter shouted as Spidermonkey stopped the Boarbatusk as it was lying on its back from the roll, spidermonkey jumping forward as another flash enveloped him before Greymatter turned into the second echo echo before vanishing.
Spidermonkey punched its stomach four times before a green light enveloped him, growing in size with four massive spider legs sprouting from his back "Ultimate Spidermonkey!" He called as each of his spider legs stabbed the Grimm finishing the monster off as the students and Professor Port clapped.
"Brilliant Performance Ben Tennyson, you used both your brains and strength in a way the Grimm couldn't counter." Peter said as I nodded returning to my seat.
"Now for you Weiss." Professor Port said as another cage was brought out, containing another Boarbatusk.
"Alright, let the match Begin!" Professor Port exclaimed as he cut open the cage with his axe.

Weiss took a deep breath as the black and white creature left the cage and immediately charging at the heiress, as the boar did a charging attack Weiss did a sidestep and slashed at the boarbatusk's thick hide. A chuckle left the elderly professors mouth "Wasn't expecting that were you?" He remarked as the grimm recovered from its charge and turned to face the Schnee once again.
"Hang in there Weiss!" Ruby called from the stands as the Boar and the huntress in training charged at each other, Weiss going for a stab however entangling her weapon with the grimms tough tusks.
"Come on Weiss show it who's boss!" Ruby said in an effort to cheer on her teammate however the distraction caused Weiss' grip on her Myrtenaster allowing the grimm to throw it away and get a solid hit on Weiss' stomach.
Thanks to her aura protecting her, Weiss quickly got back to her senses as she dodged another charge by the Boar giving her time to run and get her weapon back from the empty side of the combat area.
"Weiss go for it's belly, there is no armor there protecting it-" Ruby shouted trying to help her partner out, earning a glare back.
"Stop telling me what to do!" The Schnee responded with malice as the Boarbatusk jumped into a roll charging at Weiss, for what would ultimately be its last roll of the fight as Weiss blocked the attack with one of her Glyphs.
As the Grimm fell on its back Weiss wasted no time and stabbed the creature of darkness in its belly, ending the match once and for all.
"Bravo, bravo! It seems like we are indeed in the presence of a future Huntress." Professor Port finalised as he finished the class.

As I looked towards where Weiss stormed off to and seeing RBY follow their teammate I remembered what it was like when I was a kid. In multiple ways Weiss was like Gwen and Ruby was like me, the two may squabble over things but they will come out on top of every situation thrown at them no matter what, leaving me to wonder...how are my family back in Bellwood?

In the deep forest of Emerald leaves, a scientist in a labcoat stood. He examined the trial grounds and the ruins which were in a more decrepit state then before. "Hmm it seems like Ben has found himself here, though I do wonder if I have met him yet" The man cryptically said as he put a device on the ground as a small grey bug appeared looking straight at the professor.
"What is the meaning of this?" The raspy voice of the being asked...