RWBY x Ben 10 crossover

Worlds collide

When I got back to the academy I had received a message from Glynda, a summon to my office specifically. Considering the idea that Azmuth had found a way home, my pace quickened to the confusion of Team RWBY who had just finished patching up. "Ben, are you alright?" Ruby asked as I nodded with a smile on my face.
"Yeah, for the first time in what feels like forever I think I am." I grinned as my speed walking turned into that of a jog as I headed straight to the tower.

As Team RWBY looked at Ben walking away with a grin on his face Weiss let out a sigh. "Only he can be so happy after everything we've been through." Weiss sighed as Yang let out a chuckle.
"Yeah, but at least someone is optimistic." Yang smiled.
"By the way Blake, Ben was with you throughout the weekend right?" Ruby asked as Blake nodded.
"He used one of his transformations to track me immediately and wouldn't leave my side, even though Sun was with me." Blake explained.
"We'll have to surprise him with something for keeping one of us safe." Ruby gave an innocent grin as the team nodded with a smile.

With every ping of the elevator that went past, my foot started tapping faster and the excitement of seeing my family again filled my body. At some point I started whistling out of happiness and as I reached the tenth floor my whistling stopped. Slowly the doors to my office started opening and as they did the sight of Azmuth and Glynda greeted me...but they weren't the only ones there. Looking to the side I saw Team CVFY sitting in the corner, all with varied expressions. Whilst Coco looked at me with a serious look, Velvet gave me an intimidated gaze, Yatsuhashi was trying to stay calm and Fox was casually sitting there. As I looked towards Glynda she looked at Team CVFY with a disapproving look. "Whilst I understand you four were worried about Ben, due to your friendship with him, you understand there is consequences to entering a Staff members office without their permission." Glynda scolded as I walked to Azmuth.
"What happened, why wasn't the door locked?" I asked as Azmuth looked at me.
"There was a brief electrical cut to the school this afternoon, I hadn't reset the lock due to being on a verge of a breakthrough." Azmuth explained as he looked towards my friends.
"Now you're here Ben, how is one of your aliens outside of your watch?" Coco asked as I sighed.
"He isn't one of my aliens, he is the creator of the original Omnitrix that I wore. Team CVFY meet Azmuth, the smartest creature in five galaxies in my universe." I introduced.
"The Original creator of the Omnitrix, why is he here?" Yatsuhashi asked, trying to understand the situation.
"I was brought here by someone from mine and Benjamins universe, with the intention of helping the wielder of my device." Azmuth explained.
"You two don't have to answer any more questions, you are not under any pressure here due to them having broken the rules." Professor Goodwitch reminded us with good intentions.
"No, if we don't tell them then it'll eat at their minds and might be a distraction." Azmuth shook his head.
"Yeah, and if they understand what is going on then they might be able to keep an eye out." I agreed.
"Very well, but as a punishment for breaking the rules they will be tasked with planning the ball for the next Semester." Professor Goodwitch nodded.
"Actually, Fox can you open a channel between your team and me?" I requested as Fox nodded.
As Fox activated his semblance I could feel a knocking on my sub-conscious, slowly I started feeling like I was being watched from four different directions and as I felt this I let out a sigh.
"I think...it's better if you see what happened...from the start that is..." I messaged Team CVFY as I could feel another join the 'call', this being Professor Goodwitch.
"What do you mean by that Ben?" Velvet asked mentally as I mentally sighed.
"It started when an alien device..."

Two weeks later we were eating lunch in the cafeteria. After the team and Professor Goodwitch had been given my full backstory we had felt closer and more comfortable around each other. Professor Goodwitch had given Team CVFY a key to my office, in case they had any questions for Azmuth, and also updated Professor Ozpin on the situation. The Headmaster was fine with this due to Team CVFY being Beacons number one team, however they were given a very strict warning not to let anyone else know about Azmuth. Professor Peach was currently absent, due to investigating a ghost town on the edge of Vale with another team, so we were stuck in the Cafeteria eating food. Team CRDL kept giving me scared looks and when I met eye contact with Cardin I activated my watch to remind Cardin not to mess with Velvet. The Winchester immediately looked away when I did this. As this happened Team RWBY, minus Ruby, and Team JNPR walked over to our table with trays of food in their hands. "Hey Ben, can we sit with you guys?" Yang asked as I nodded.
"Of course." I smiled as the seven all spread themselves on the table, Blake sitting next to me as she whispered.
"Thanks for before." She whispered as I nodded.
"Your welcome, just let me know if you continue investigating this...we're in this together now." I replied with a knowing look.
"Where is Ruby?" Velvet asked as Yang spoke up.
"She's back at the dorm, she was writing something down when we came out- but enough of that, Nora lets continue our game." Yang said excited as Nora started throwing nuts for Yang to catch in her mouth.
"Impressive." I said as I started paying attention to their game as Blake got out a book and started reading.
"Oh yeah, everyone excited for the ball alter in the semester?" Coco asked.
"Not really." Blake shrugged.
"Oh come on, we're now planning it so it's going to be awesome. Even Ben is going to help." Coco responded confidently.
"I am?" I asked confused when I was in on this equation.
"Yes you are, need I remind you its your fault we're in this gig in the first place?" Coco asked with a glare.
"How is that- Nevermind..." I groaned as Blake gave me an apologetic look before going back to her notes.
At this point Velvet, who was sitting next to me on the other side, just whispered to me "Can I talk to you about the ball later?" She asked with pink cheeks.
"Sure." I said casually, not picking up on the implications which Coco smirked at whilst Yang looked over Blakes shoulder.
"What'cha doing?" Yang asked as Blake closed her book.
"Nothing, just going over notes from last semester." She said as Nora tried to catch Yang off guard with a nut which Yang caught effortlessly.
"Lame." She said with a grin as Ruby approached and dropped a heavy binder on the edge of the table.
"Ahem; Sisters, Friends...Weiss-" Ruby started, with a voice giving off the vibe of a politician proposing an idea.
"Hey!" Weiss responded.
"Four score and seven minutes ago I had a dream." Ruby said confidently.
"Martin Luthor King is that you?" I joked, knowing no one else would get that joke whilst Yang caught another.
"I dreamed that the four of us would come together, as a team, and have the most fun that anyone's ever had...EVER!" Ruby exclaimed her plan happily as Weiss' eyes squinted at the Binder which had the words 'BEST DAY EVER' scribbled on the front with a red marker.
"Is that my binder?" Weiss asked as Ruby gave two peace signs.
"I am not a crook." She claimed nonchalantly.
"What are you talking about?" Blake asked.
"I'm talking about kicking the semester off with a bang!" Ruby pointed at her, secret, Faunus Teammate.
"I like to kick off my semesters with a Yang!" Yang interrupted, throwing her fist into the air expecting everyone to laugh at her pun.
An awkward silence followed as we all looked at Yang, pain on our faces, before the silence was interrupted with a tomato being thrown at Yang by Nora.
"Look guys, it's been a good two weeks, and between more exchange students and the tournament at the end of the year our second semester is going to be great! But classes start back up tomorrow, which is why I have taken the time to schedule a series of wonderful events for us today." Ruby smiled softly.
"I...I'm not sure if I should be proud or scared of what you have in store." Weiss said as Yang threw the tomato back at Nora, though it missed and hit Fox.
"Hey!" Fox growled as he started to formulate a plan in his head.
"I don't know, I think I might sit this one out." Blake apologised as Weiss shook her head.
"Sit this one out or not, I think however we spend this last day we should do it as a team." Weiss said to Blake with a smile.
As Weiss got up to continue her thought process, Fox got the pie from his lunch and threw it at Yang though it missed and hit Weiss. At this Fox' face paled as he pointed towards Yatsuhashi who had a shocked look on his face. Weiss started clenching her fists as she looked down to her tray at what she could fire at Fox. "Get down!" I shouted as I noticed Weiss' eyes land on some of her vegetables.
I grabbed Velvet and jumped off the seat as the Schnee fired her food at us as Nora yelled "FOOD FIGHT!" With the most gleeful tone in her voice.
"Fox, get a communication channel up!" I shouted as we ran to a corner of the room and kicked a table onto it's side as cover.
"What are we going to do?" Velvet yelped as I looked at Coco.
"Coco, is this a bad time to mention Weiss had made a comment about how you dress?" I lied, trying to get Coco pumped up for the food fight.
As I said this Coco's eyes twitched, her fists clenched as she picked up two potatoes and glared at Team RWBY who was now throwing food at Team JNPR. "That Schnee is going to pay!" Coco roared as I heard a beeping come from my watch, looking down I saw a familiar alien I haven't seen in years.
"You guys ready?" I asked with a smirk as Team CVFY nodded, all ready to go as I slammed my hand onto the watch.

Suddenly I felt my body shrink and my stomach bloat, some scales started poking out of my back whilst a small tail formed out my back. A grumble started forming in my stomach as a long tongue fired from my mouth and grabbed a cake on the side, immediately snatching it backwards as it all got in my mouth and I swallowed.

"Oh yeah, Upchuck is back baby!" I grinned as I jumped over the table and fired a ball of energy towards the two Teams, to which they both dodged however it had set our territories now.
The south side of the cafeteria was now ours, the sides were Team RWBY's and the north was Team JNPR's who had started building a massive tower out of the tables and chairs as tons of people started flooding out of the cafeteria out of fear for their lives, Team CRDL included.
"Hey guys, maybe we shouldn't-" Jaune tried speaking reason however before he could he was grabbed by Yang and thrown at the window to which he hit it with a thud.
"Jaune!" Pyrrha gasped as the Spartan charged at the Blonde Bombshell.
"Now Yatsuhashi!" Velvet called out as Yatsuhashi jumped over our cover and charged at the two fighting, swinging a baguette at the two to which the two jumped out of the way.
"I'm the queen of the castle!" Nora sung as Pyrrha had landed on their structure now.
"You're going down!" Ruby called out as she crushed a carton of milk in her hands, her team getting pumped up.
"We shall claim this land in the name of Coffee!" Coco roared as Team JNPR started throwing watermelons at us and Team RWBY, to which I grabbed the ones which were fired in our direction with my tongue and ate them.
As I did this Pyrrha looked over to me and noticed a glow coming from my stomach before I fired out another ball of energy which destroyed their structure. "So that's how this alien works, good." Pyrrha smirked as she charged at me but was intercepted by Blake who used two baguettes as swords as the two started fighting with baguettes.
"Now Fox!" I messaged fox mentally as he jumped from his hiding spot, behind a curtain and surprised the two by spraying mustard at them however the two dodged out of the way.
"Yang, jump!" Weiss called as Yang jumped whilst the Schnee sprayed Ketchup at Fox, Pyrrha and Jaune who was behind Pyrrha and took the brunt of the hit when Fox and Pyrrha dodged.
"AAH, IT GOT IN MY EYES!" Jaune exclaimed as Pyrrha narrowed her focus on Weiss until Nora grabbed a pole, impaled a watermelon onto it and went to attack the Schnee.
"Ben now!" Fox exclaimed as I fired another energy ball, this time at Weiss who dodged and it hit Velvet, who was sent flying back to a wall.
"Velvet no!" I exclaimed as I wobbled over to her side.
"Ben...Avenge me..." Velvet coughed as she pretended to faint.
"Velvet...NOOOO!" I roared out as I turned back to normal before transforming into Rath.
"Since when could Ben do this?" Nora asked as she felt an instinct to want to pet the cat.
"Grr...LET ME TELL YOU SOMETHING TEAMS RWBY AND JNPR, RATH IS GOING TO AVENGE VELVET AND WHEN HE IS DONE, RATH IS GOING TO FEAST LIKE A KING! TEXAS CLOVERLOAF!" I roared out as I grabbed a loaf of bread and pinned Yang down with it.
"Get off of my sister!" Ruby roared as she used her semblance to tackle me off her, leading me to land on a pole on the wall.
"LET ME TELL YOU SOMETHING RUBY ROSE, RATH WILL DO WHATEVER HE WANTS! APPOPLEXIAN MOONSALT!" I roared as I backflipped off the pole and aimed for Ruby whilst coating my hands in salt, intending to punch ruby with the salted hands when I landed however before I could I was thrown out of the way by Pyrrha who used her semblance to control hundreds of metal cans, hitting me with them which sent me flying through a wall.

As I stopped flying I landed in the middle of the courtyard with Glynda and Professor Ozpin looking down at me. "Do you want to explain yourself Ben?" Glynda asked, a serious expression on her face.
"LET ME TELL YOU SOMETHING GLYNDA GOODWITCH AND PROFESSOR OZPIN, RATH WAS WINNING A FOOD FIGHT AND STILL INTENDS ON WINNING!" I roared as I tried running back to the cafeteria however was stopped by Glynda's gravity dust.
"No you wont, be a good cat and stay." Glynda glared as she stormed towards the cafeteria.
"RATH WILL REMEMBER THIS!" I roared before turning back to normal whilst Professor Ozpin chuckled.
"Let's go after her, shall we Ben?" Ozpin asked as I nodded.
"Uhh yeah of course, that's probably a good idea." I awkwardly said as I walked next to Professor Ozpin, like a child just being scolded.