RWBY x Ben 10 crossover

Investigation

Being called to Ozpins office at such an early time, 5am, felt torturous. According to Professor Goodwitch, who had come to get me from my room, a couple mysterious beings have been spotted in a forest near a town called Patch though that was all she was told herself. As we were standing in the elevator hearing the soothing elevator music as well as the ping of the buttons with every floor we went past the Professor finally spoke up. "So, is there a reason your watch looks different then it did after the fight in Vale?" She asked as I looked down to the watch.
"I...I'm not sure myself to be honest. I went to sleep before the initiation exam and it had changed over night." I explained as Glynda raised her right eyebrow at my response.
"Really?" She asked, clearly not believing my story and I don't blame her to be honest, if I was told a similar story I wouldn't believe it either.
"Yeah, whilst I was sleeping I had the same dream as I did when I found myself in Remnant. It originally gave me the Omnitrix back in the first dream but in the second I found whatever this is on my wrist, it also unlocked a few more aliens." I explained.
"I see, I don't quite buy it but you have no reason to lie I suspect so I'm fine to accept that information for now." She responded as the elevator pinged one final time as the automatic doors opened.

Ozpin's office was a circular room at the highest point in Beacon. The walls were all decorated by windows which gave an open look to the rest of the academy and the front window showed the clock which stood proud in the center of the academy. Walking forward into the room I noticed tons of gears on the wall, clearly working the clock, but the biggest shock was it wasn't making any annoying clicking noises that you got with every clock in schools from my world. "Thank you for attending Mr Tennyson." Ozpin spoke up making me snap my head to face the headmaster as I nodded.
"No worries, though I will be having a nap when I get back." I smiled.
"Actually we have a class to plan after the investigation so we are quite strapped for time." Goodwitch said as I sighed.
"Of course we do." I groaned as my smile vanished from my face.
"Well lets not waste any time then," Ozpin stated calmly as the room dimmed as a hologram appeared on his desk showing a map of Vale which he then zoomed into a town named 'Patch' "The creatures appeared in the forest near Patch, we don't quite know what they look like however one of them looked like one of the creatures you can turn into." Ozpin said as he brought up a picture of Greymatter which I tilted my head at.
"A Galvan is in Remnant, that's weird they normally don't leave Galvan Prime- though that might just be Azmuth." I stated as I looked at the hologram of Greymatter.
"Interesting, what can you tell us about these Galvans?" Ozpin asked as he leaned forward and I put my hand to my chin.
"Well they're one of the smartest alien's in the universe, one of them even made the Omnitrix," I said as I turned into Greymatter. "In this form I am way smarter, can understand electrical objects at a first glance too. Though I'm not that physically strong" I stated with a sigh.
"Interesting, then we should find this Galvan before anyone else can. It would be Beneficial for us and make sure enemy's like Roman Torchwick cant get his hand on them." Ozpin nodded as I turned back into my normal self.
"Right, though because they're so small it could be difficult finding them." I explained.
"Then Professor Goodwitch shall join you, in all of my years knowing her she truly is a perceptive one." Ozpin spoke in a calm manner, though the command was clear.
"Of course sir, should we take too long would you put Professor Port in charge of my class, I don't quite think Oobleck is up to task teaching Combat class." Professor Goodwitch requested as Ozpin nodded.
"Very well, make your way to the loading dock, a Bullhead will be waiting for you." Ozpin nodded as he got up from his chair and walked to the window behind him, looking out inquisitively, sipping a coffee in his signature mug leaving us to leave.
"Shall we?" I asked as Glynda nodded before heading to the elevator with me following her.

The walk to the Bullhead itself was relatively quiet, our mission from Ozpin was quite clear but it wasn't until we were on the ship when the silence was broken. "So what is the plan to find this 'Galvan', as you called it" Goodwitch spoke up as I thought for a second.
"My original plan was to use XLR-8 to find him however maybe if I use Greymatter the Galvan wont see me as a threat?" I replied.
"I see, that would make the most sense though we have to be careful not to attract any Grimm. The forest of Patch is infested with the creatures so we have to be careful." The teacher explained.
"What kind of Grimm could we expect? So if Grimm do attack we know what to expect." I asked as a hologram appeared on the window of the bullhead.
"We should only have to deal with Beowolves, though Ursa's have been rarely spotted in the area." Glynda explained as pictures of a Beowolf and Ursa showed on the screen.
"Do they have specific weaknesses like Boartusks do?"
"No, however the wolves travel in packs so we will have to deal with numbers if they show up" Glynda finished as the bullhead started to descend.
"I don't think any amount of Beowolves will be able to take us on to be honest, with my aliens and the skills I saw from you first hand two months ago." I said not meaning to be cocky about it.
"Words like that will cause your downfall Mr. Tennyson." Goodwitch glared as I nodded hearing the boosters of the ship slow down as we landed.
"I know, it wasn't meant to be cocky sorry." I sighed as we got to our feet and headed out.

As we stepped off the bullhead a warm feeling filled my lungs as memories of my road trip with Grandpa max and Gwen filled my mind. I may have taken it for granted most of the time back then but there really isn't anything better then the fresh air of an open forest. In the distance of the luscious hills of Orange trees we saw a village in the distance, the houses were scattered however they were close enough to be considered a village and the sight was honestly mesmerising. "We can sight see another time Mr. Tennyson," Professor Goodwitch said, remaining focused on our task as she looked at me "I suggest you use your watch now Mr Tennyson."
"Yeah you're right, its hero time!" I said as I selected greymatter on the HUD of the watch and slammed my hand down on the watch as I felt my body to start to change however something was off...
Where as normally when I turn into Greymatter I shrunk at fast speeds this time it only shrunk me for a second or two as I felt two extra limbs pierce out my stomach. "Spidermonkey? Oh come on now's not the time for you to be glitching" I groaned.
"What is wrong Ben?" Professor Goodwitch asked as I sighed.
"The watch likes to glitch out on me at times, its like it has a mind of its own-" I sighed as I shrugged all four of my arms before hearing a familiar voice in my trees.
"It's not a glitch Ben and you know it." A familiar croaky voice said from a tree, as I looked up all four of my eyes widened as my mouth dropped.
"A-Azmuth?!" I exclaimed as I saw a familiar Galvan in a black and green outfit.
"What are you doing here Ben Tennyson, not only disappearing with the Omnitrix but replacing it with the Ultimatrix you are in very big trouble," Azmuth scolded as I winced "but...at least you're okay, I expect a full explanation though on what happened." Azmuth sighed as we heard roaring from further in the forest and a group of heavy footsteps, too heavy to be human, running in our direction.
Immediately Glynda got her weapon ready as I hurriedly picked Azmuth up and threw him on the Bullhead "That can wait, we have monsters to take care of." I quickly said as I pressed the watch's symbol on my chest as more limbs grew from out of me, I started getting bigger and I felt like a completely different alien though I knew I was the same species...

ULTIMATE SPIDERMONKEY!