Volume 1 Issue 4: Silver meets Green

Kingdom of Vale

7:32 P.M.

Vale.

That was the name of the city Ben was in at the moment. It had been a few days since he left Velvet's town, telling her that he would come back whenever this meeting with this Ozpin individual was done, promising her that he wasn't leaving anytime soon.

To be honest, it kinda hurt Ben to have to leave so soon, but after reading the note, there was no way he was going to throw away this chance.

After gathering what little he had in terms of belongings, the young hero made his way to the city that Qrow said Ozpin was based in, hence the reason why he was in Vale right now. With the light from full moon shined over the city, Ben could only wonder what this meeting would entail.

He wasn't able to use the Ultimatrix at the moment because he had used up most of the time limit to travel to the city.

So once he got here, the young man was forced to travel via foot. Continuing his tour through the city, Ben saw that it didn't look any different from the ones that he's seen, well on Earth anyway, and it looked relatively peaceful.

'Looks like this place doesn't have too many problems.' thought Ben as he turned around the corner.

Just as he did so, the young man saw some people cowering back in fear of something. raising an eyebrow at the situation, Ben made his way through the crowd and saw it was a group of men. roughly five or six, all of them dressed in black suits with matching hat and shoes, red sunglasses, and a red tie, with a small amount of variation. All of them have black hair with some having a black mustache as well. They also seem to have the same skin color.

One, in particular, stood out, a man with bright, long, orange hair with long bangs covering his right eye. He had slanted, dark-green eyes as black eyeliner traced his visible left eye covered by a black bowler hat with a small feather tucked into its red band and wore an immaculate red-lined white suit with long black pants and black shoes. His accessories include a small gray scarf, black gloves with buckled sleeves. He and the rest of the group were walking down the street as if they owned them.

Since having the Ultimatrix, Ben has always faced trouble, and so his gut feeling was usually right when it came to dangerous threats. As of this moment, the man with the bowler hat was someone that Ben needed to keep an eye on.

Deciding to tail them, the young man made sure to keep out of sight.

As they walked through an alleyway, the young hero could only wonder where these men were going. Though robbing a place in the middle of the night, doesn't look too bad of an idea, does it?

Once they walked out into the open, the leader of the group took out a cigar from his pocket and lights it up without even using a lighter.

That immediately got Ben's attention, making him realize that this man must possess either a fire-based semblance or someone must be really good at lighting things without even touching it at all. But he didn't put it past him since he was still new in this world.

It didn't take long for them to stand in front of a store, one that went by the name of 'Dust Till Dawn'.

Looking through the window, Ben had taken a hiding spot behind the corner of a building, wanting to see this short conversation happens between the leader of the group and the owner of the store, who was simply an old man, and within moments, one of the grunts pointed a gun at the store owner.

Without even thinking, the young hero reached down for his Ultimatrix, preparing to turn into one of his aliens until he heard something out of the blue.


BGM - Red Like Roses Part l - Ruby Rose's Theme - RWBY: Volume 1 Soundtrack (2013)

The sound of glass breaking could be heard, making Ben look around the corner from where he was hiding and see something that made his eyes widened. From all years of fighting aliens and saving the universe, he had never seen a scene quite like this.

Standing in front of the group of the men who remained, was a young girl who didn't look any older than fifteen years old in a red and black outfit. The girl is a fair-skinned girl with black, choppy hair that gradates to dark red at the tips. She wears a long sleeved thick black blouse with a high collar and red trim on the sleeves, a black waist cinched with red lacing up the front, and a black skirt with red trim. She also wears a pair of thick black stockings and black combat boots with red laces, red trim around the top and red soles. Her outfit is topped by a red hooded cloak fastened to her shoulders by cross-shaped pins. Her emblem appears as a large silver scattering rose brooch that is pinned to a wide black belt slung around her hips on a angle, which also carries silver bullets and a silver pouch.

The only thing that truly stood out were silver eyes, filled with innocent about the world around her.

However, this fifteen year old girl was wielding a giant crimson scythe. Seeing a girl wielding a weapon of that size was shocking, to say the least.

Putting his hand down, the young hero was curious about what the girl could do. As there was a stare-off between her and the group of criminals, one of them, spoke up, "Okay," he said slowly, "Well, get her!" ordered the leader, with the remaining henchmen nodding and started attacking the girl.

The henchman heads out of the shop and charged at Ruby, who spins around her scythe and kicks the first approaching criminal in the face. She gets Crescent Rose out of the ground and fires it off to hit another one with the butt of her weapon, sending him flying.

She fires again and brings the side down on one attacker and dodges the next's gunfire with her sniper rifle's speed, getting close enough to knock him into the air and follow him upwards so she can beat him away to Roman's feet.

Meanwhile, Ben was flabbergasted by what he saw.

It wasn't every day he could witness a girl younger than him, who wielded an amazing weapon, kicking some serious butt.

Once looking over the bodies of his henchman, the man in the bowler hat sighed, "You were worth every cent. Truly, you were."

He then looked at Ruby, dropping his cigar and crushing it with his cane as approaching police sirens are heard. "Well, Red, I think we can all say it's been an eventful evening, and as much I'd love to stick around..." the man raises his cane and opens the bottom to reveal the muzzle of the gun part of his cane with a targeting reticle.

"...I'm afraid this is where we part ways." he uttered, pressing a button on his cane, causing a red flare to fly out of the muzzle of the cane.

Seeing this play out, Ben didn't hesitate as he activated his Ultimatrix after finding the right alien form he wanted, he slammed down on the core, causing the familiar green light to appear once again.

Just as Roman fired the explosive red Dust flare at Ruby, she moved out of the way, however, what she didn't account for was the strength of the blast.

Once the explosion went off, Ruby didn't feel anything at first.

Then a few moments later, the girl opened her eyes, revealing their silver color. Her vision took a minute to see a strange figure standing in front of her, with his back to her. The figure appeared to be a little taller and not as skinny than the average person, but that was all someone could use to compare them.

In front of her, this being was made up entirely of magma being held together by numerous dark red or brown rocks, which were separated by various cracks, showing the yellow inner magma flowing throughout the creature's body. The rocks over its body were darker, and their pattern was unique, with fewer rocks covering its inner body. Its head was also another strange thing as it was entirely on fire while it's face was made of the familiar dark red rocks, but its eyes were not connected to the fire on it's head. Its feet, however, has a slight oval-like design with only two toes and one back toe. All in all, both Ruby and Roman were quite surprised when seeing this creature of fire.

However, they seem to notice the green hourglass symbol on its chest.

As the dust settled, Roman saw the fire-based creature and shook his head for a moment before calling out to it, "Now, what the hell are you?"

The creature formed a smirk on its face, "You know," it said in a deeper raspy voice, "Didn't your mother ever tell you not to play with fire?"

Roman could only snort, "Yeah, and that's coming from the walking fire stick." he retorted, preparing to fire another shot at the fire-like creature and make his escape. Once he felt his weapon was ready to go, the man lifted his cane once more and fired at the fire-like creature.

This time would be different, however, and as it made contact with the Pyronite, he could feel the force of the explosion, but it wasn't enough to move him.

'Woah... didn't think that thing would pack a punch like that.' Ben thought.

In the distance, the Pyronite noticed a figure running towards a building with a ladder attached to it. Just as he was about to go after the criminal, he remembered the girl who was originally fighting him. Looking over to his right, he saw the girl getting up from the ground.

"You okay?" Heatblast asked.

At first, the girl looked somewhat hesitant until she saw him merely standing there, but her demeanor changed within less than an instant, "Oh my god! You look awesome! How can you make your body become fire like that?! Is it your semblance?!" she asked the Pyronite.

Ben was surprised to see how quickly the girl went from being hesitant to full out excitement.

Scratching the back of his head made of dark red rocks, the Pyronite reminded her of what needed to be done, "How about I tell you later if there's time, but right now, there's a guy with a bowler hat that we need to go after."

Looking at the shopkeeper, Ruby asked him, "You okay if we go after him?"

The old man merely said, "Uh huh."

Ruby had then proceeded to use her weapon; Crescent Rose, to get to the top of the building. Wondering where the strange fire-man was, Ruby looked back as she was scaling the side of the building to see the Pyronite currently using its fire as a propulsion system.

A look of shock was present on Ruby's face.

"W-W-What?" was all she could say.

It wasn't every day that Ruby got to see something like this. Heck, even in her wildest dreams she could never imagine herself meeting someone or something was entirely made of fire. Realizing that she was in the middle of something important, the girl continued to scale the building until she jumped onto the roof of the building, landing a few meters away from Roman Torchwick.

"Hey!" she called.

Roman seemed to have muttered something under his breath, "Persistent..."

Ben landed next to her within a few moments, curious as to where the man was supposed to go.

Until he heard the sounds of engines on the other side of the building, right where Roman was currently standing at the moment. Within moments, there was a massive aircraft that appeared behind the criminal.

As the wind created by the aircraft intensified, both Ruby and the Pyronite covered their eyes.

Taking a red gem from his coat, Roman laughed, "End of the line, Red."

Throwing the red gem on the ground, it didn't take long for Ben to realize what it was that he threw.
Immediately, Ben, as well as Ruby, saw Roman fire his cane/rifle at it. This was when Ben tapped the green hourglass symbol on his chest as the familiar emerald light surrounded him.

Just as the resounding explosion went off, Ruby felt a pair of strong arms carrying her, but they felt like a hard stone almost. Opening her eyes, the silver eyed girl saw that the fire-like humanoid she had been working with was gone.

BGM Ends


BGM - Red Like Roses Part ll - Ruby Rose's Theme - RWBY: Volume 1 Soundtrack (2013)

Now, it was replaced with a creature that stood around six feet tall with a crystal-like body as it's lower body, torso, and the top of its head consisted of indigo crystal which has black lines and dots all over it. There were six crystal shards on its back, and it has also sported two on the front of its chest. It's eyes were green, and has blades on its forearms. It also wore the same green hourglass symbol on its chest just like the fire-like humanoid had worn.

"Diamondhead!" the new creature announced.

Roman couldn't help but laugh, thinking that the explosion had gotten rid of the little girl as well as the fire creature that had been helping her, but just as the dust settled, he saw that the girl survived as she was being put back on her feet by some new creature.

One that looked to be made of crystals of some kind.

Muttering something under his breath, the criminal took out his cane and prepared to fire off another round. Just as the round flew out of the rifle, the man couldn't help but feel smug.

"Whoa-ho-ho-ho!" Roman couldn't help but laugh until he noticed something that caught his eye, "Huh?"

A middle-aged woman that has very light-blonde hair tied back in a bun with a curl hanging down the right side of her face. Her eyes are bright green and she wears thin ovular glasses. She has dangling teal earrings that match the hanging pendant on her collar. She wears a white long-sleeved, pleated top that has a wide keyhole neckline and gauntlet cuffs that flare in pleats at the wrist. Her lower body is covered by a black high-waisted pencil skirt with bronze buttons and black-brown stockings. She also wears black shoes with bronze heels and a cape that is purple on the inside and black on the outside. The cut of the cape is stylized to end in flames and arrows, with a row of diamond-shaped bronze beads on the back. Above this line of beads appears an emblem of a tiara that is her personal symbol.

She was in front of Ruby and the Diamondhead, casting a purple circle of protection over them with her riding crop. As Ruby looks on, Glynda Goodwitch waves her weapon and summons several streaks of purple energy at the Bullhead.

Roman is thrown around in the back until he goes to the cockpit, where a woman with ashen-black hair in a dark-red, off-the-shoulders, v-neck mini dress with yellow designs, her face unseen, is struggling with the controls.

"We got a Huntress!" Roman yelled, knowing that things would go south from here on out.

The woman in the red dress got off from the seat and heads towards the back as Roman takes the controls of the Bullhead.

While the Huntress with the Petrosapien and Ruby was glowing purple for a moment, aims another blast above the Bullhead, resulting in a dark storm cloud right over the VTOL aircraft.

"The hell...?" muttered Roman when seeing the clouds forming around them. Feeling that something bad was going to happen if they didn't get out of here. And he would get his answer within a few moments.

With a flick of her riding crop, large jagged hail starts falling from the clouds, pummeling the Bullhead and even breaks through the window, narrowly missing Roman's head.

The woman in red reaches the back and her arms and chest light up like fire, aiming a burst of energy at Glynda.

The huntress blocks it, but the flame splatters behind her and glows hot with the enemy's raised hand. Glynda backflips out of the way as the explosion destroys part of the roof she was standing on. She magically uses her riding crop to gather the shards as she creates a large arrow, which she throws at the Bullhead.

The fiery woman shatters the arrow as the wreckage separates and reshapes into more arrows that encircle the Bullhead, but summons several glowing rings around herself that expand and destroy the shards.

Ben, who was Diamondhead, started firing off shards of crystals at the aircraft, which was overwhelming the woman in the red dress to some degree. However, she managed to hold them off long enough for her to use a burst of energy, causing the ground underneath Ben to explode.
Throwing him back a few feet, but still standing.

Ruby, finally acting, reverts her scythe into its rifle form to fire at the woman, who blocks each shot and creates several blazing circles around her two opponents. Glynda telekinetically pushes Ruby and rolls herself out of the explosion's radius; looking up to see the hatch close and the Bullhead fly away.

BGM Ends


Looking at the woman who helped them, Ruby had a look of awestruck, "You're a Huntress!" putting on a pleading, awe-stricken face, "Can I have your autograph?!"

However, the blonde huntress was focused on the crystal-like creature.

"You there." she said while looking right at Diamondhead, "I need you to come with me," she said, or more like ordering him to.

Though Ben wasn't in the mood to deal with the authorities at the moment. He tapped the hourglass symbol on his chest, causing a green light to consume him. The two covered their eyes for a brief moment and were shocked to see that the crystal-like creature wasn't there anymore.

What they didn't know was that Ben never left, he merely became too small for them. After he tapped the Ultimatrix symbol on his chest, Diamondhead was replaced by a really small alien/humanoid hybrid form.

The form that Ben transformed into was about an inch tall at full size. It has grey skin with a green circuit-like design on it. It also possesses green wings as well as one large, green cyclopean-eye. Its body is a carbon/silicon-based alloy, and it has triangular feet. It also wears the Ultimatrix symbol on his chest.

This was Nanomech, an alien nanochip/human hybrid form that Ben unlocked after scanning the Nanochips he fought and Elena over a year ago.

Glynda, who was the Huntress that helped the crystal-like creature and the girl wielding the scythe, had focused her attention on the said girl. All she did was gave the girl a blank look, letting her know she wasn't amused at the moment.

"I'm in trouble, aren't I?" asked Ruby, having a feeling that it was the case.


Twenty Minutes Later

Ruby couldn't believe how quickly she went from being the happiest girl on Remnant after getting to meet a real-life huntress and that strange creature who saved her, only to be seated inside one of the interrogation rooms within the Vale Police Department. With the only source of light in the dark room, they were in was the lamp hanging over the table in front of her.

As the young girl sat in the cold, metal chair while listening to the footsteps of the Huntress she had encountered a mere two hours ago. Now, the woman was typing furiously on the scroll in her hand.

"I hope that you realize that your actions tonight will not be taken lightly, young lady. You put yourself and others in great danger." reprimanded the woman.

Just as the woman finished speaking, Ruby was already preparing to defend herself with a brilliant response and one that would surely convince the huntress that she did nothing wrong in this situation.

"They started it! And besides, I wasn't alone!" exclaimed Ruby.

Glynda sighed, "If it were up to me, you'd be sent home... with a pat on the back." she said as she continued walking around Ruby. Once she saw the young girl smile, the older woman continued her words directed at the behavior.

"And a slap on the wrist. Miss Rose, I believe you should be concerned with yourself at the moment rather than someone else."

She demonstrates her words by using her riding crop, which Ruby barely avoids as she gives out a small shriek in response, "But... there is someone here who would like to meet you." Glynda said, looking quite upset at hearing those words from her mouth.

Moving out of the way, Glynda revealed another person behind her.

The person behind her was a middle-aged man with tousled silver hair and thin brown eyes. He has a light complexion and sharp facial features. Interestingly, he has black eyebrows, suggesting that he may have had black hair before in his early age. He wears shaded glass spectacles and a small, purple, cross on the cowl around his neck. His outfit mainly consists of an unzipped black suit over a buttoned vest and green shirt. He also wears black trouser shoes and long, dark-green pants.

Ruby was confused as she wondered who this man was. That was until she saw him enter the light, revealing the plate of cookies in one hand and a cup of cocoa in his other hand.

Once he got near the table, the man leaned in and saw something which caught his eyes.

"Ruby Rose, you have silver eyes," he stated more than anything else.

As usual, the young Huntress-in-Training didn't have anything to say in return and merely let out arise that let her know she was confused, "Uh, um..."

Then, Glynda appeared next to the older man with her scroll in hand, showing the footage of Ruby in her small skirmish with the criminal who tried to steal from the Dust shop. As he motioned towards the footage, which constantly looped the same thing.

"So!" said the older man, "Where did you learn to do something like this?" he asked.

With caution, Ruby said the name of the school she attended for combat training, "S-Signal Academy..."

The older man seemed amused by her answer, "So, the teachers at Signal Academy taught you to use one of the most dangerous weapons ever conceived?"

Ruby then added another fact about why she even knew how to wield a weapon like hers, from building her scythe to learning how to use it to its full potential, "Well, one teacher in particular from Signal had taught me."

"I see." responded the man.

Putting down the plate of cookies, Ruby seemed a bit hesitant to grab one until she ate the one she picked and saw there was no rebuttal. From there, the girl continued to grab cookie after cookie and shovel them into her mouth.

"It's just that I've only seen one other scythe-wielder of that skill before. A dusty, old crow..." muttered the man in green, which prompted a response from Ruby when she heard how the man in front of her described the teacher.

"Oh! That's my uncle!" She then swallows and wipes her mouth, embarrassed from speaking with her mouth full, "Sorry. That's my Uncle Qrow! He's a teacher at Signal. I was complete garbage before he took me under his wing. And now, I'm all like - Hooowaaah! Witchaaaa!"

Ruby had then proceeded to make some karate-style poses and noises in front of the two adults, who were curious about the girl and the level of enthusiasm she has.

Taking a seat in front of her, the man spoke up, "So I've noticed." said the man, "And what is an adorable girl such as yourself doing at a school designed to train warriors?"

The young girl made a look of determination when facing the man in front of her, "Well... I want to be a Huntress."

"You want to slay monsters?" he asked, curious about her answer.

Ruby nodded, "Yeah I only have two more years of training left at Signal! And I'm going to apply to Beacon!" she soon started talking much faster than before, "You see, my sister's starting there this year, and she's trying to become a Huntress, and I'm trying to become a Huntress 'cause I wanna help people. My parents always taught us to help others, so I thought, hey, I might as well make a career out of it!"

She had then giggled, "I mean the police are alright, but Huntsmen and Huntresses are just so much more romantic and exciting and cool and really, gosh, you know!"

Sitting in her chair, the girl had a smile on her face after talking about what seemed like her dream. Even the two adults wondered where such energy came from to follow through with such a dream like hers. Thought it was nice to see someone dedicated to her dream, even if it was a childish one at best.

Glynda and the man in the room merely studied her.

"Do you know who I am?" asked the man.

The girl didn't even take a second to answer such a question, "You're Professor Ozpin. You're the headmaster at Beacon."

The older man, now named Ozpin, greeted the girl, "Hello."

"Nice to meet you," Ruby responded.

Ozpin had asked her the question he knew she was more ready to answer, "You want to come to my school?"

Ruby smiled when hearing that question, "More than anything."

After exchanging glances with Glynda, who shows her disapproval with rolling her eyes before he turns back to Ruby, "Well, okay."

Ruby smiles, wide-eyed and open-mouthed. Just as she was about to get out of the chair, the man made a gesture for her to slow down and wait a moment. Wondering what he needed, Ruby sat back down and waited for him to speak.

"Miss Rose," he called out to her, "Before you come to my school, I must have you understand something about those who attend and work at this school."

Nodding her head, Ruby wondered what exactly the headmaster wanted to tell her, "There are many reasons for one to attend my school, and sometimes, those reasons aren't what it seems like. There are times where slaying monsters and protecting others for the good of mankind... isn't a choice for the few who remain, but a necessity and one that is forced upon others. Remember that Ms. Rose, remember that when staying at my school..."

With those final words, Ozpin got up from his chair and started heading for the door.

Ruby had so many questions, but the one that stuck out the most was about the strange creature who saved her. It was like a magma-based creature with the ability to create fire and heat from its body, but to touch the strange green hourglass symbol on its chest into a creature made out of diamonds was even more strange.

However...

The girl simple kept those thoughts to herself as she got up from the chair and headed for the door, wondering when she would ever meet the individual who could turn into those creatures, but what she didn't realize was that she would meet him sooner than expected.

As the door of the room closed, leaving behind two empty chairs...


Meanwhile, somewhere near the alleyways in the City of Vale

After a few moments, Ben was able to get away from the scene since he turned into Nanomech.

The moment he transformed back into his human form, the young hero knew that he couldn't afford to waste his time with cops. Sure, he was a person that generally didn't break the law or try to do something that Kevin was more than fine with.

Deciding to shake those thoughts, for now, the young man started walking away from the general area where Torchwick and his men had been.

Just as he turned a corner, the sounds of sirens in the distance only strengthened this. However, he let the criminal escape, but because of the woman inside the aircraft, the possibility went down.

'Great... I let the bad guy get away, and I don't have a place to sleep.' Ben thought miserably, knowing that he was going to have to sleep somewhere uncomfortable.

"Oh man, I miss that shed of mine." the young hero said.


Few Minutes Later

Leaving the police station in silence, Glynda Goodwitch and Ozpin walked down the sidewalk without having said a word. This caused the blonde professor to be concerned for the man who she's come to know after all these years.

"What's the matter Ozpin?" She asked.

Ozpin didn't respond at first as he looked towards the shattered moon looming over the world of Remnant.

Thoughts ran wild inside the man's mind, from numerous pieces starting to fall into play, but there was one he wanted to secure more than anything else, possibly on par with Ruby Rose. The young man who Qrow found in the forest and witnessed a power that even the older huntsman had never seen before.

Being able to go from a human to the creature he did, but also learning that he could potentially turn into more, and with this knowledge, the professor knew by having individuals like Ruby Rose and the mysterious boy, could help in the coming days.

However, he first needed to prepare for the meeting he was going to have tomorrow with this boy.

"I don't trust this Ozpin," Glynda spoke up, voicing her thoughts. "There is no record of a semblance being able to turn you into creatures at any point in our history, especially creatures that primarily have never been seen before, it only makes me nervous about what you're going to do."

The older Huntsman merely glanced at Glynda before looking back at the moon.

"Just have faith Glynda," he replied, "If what Qrow said is true, then what reason would either of us to fight if our goals are the same. He protected a town full of Faunus without even flinching, telling me he has experience in doing things of this nature."

Looking at the footage that Qrow managed to get during the fight in the town of Faunus, causing the blonde professor to narrow her eyes, "What is he?" she asked out loud.

"He's a special individual who could do some good with those abilities of his. Now, let's head back to the academy because if I'm correct, the first day of school for many of our new students starts later this week." Ozpin said.

Soon both made their way to a car waiting for them.

It was going to be an interesting meeting, and if there was anything that Ozpin was good at, it was convincing people listening to him was the best course of action, even when they may seem questionable...

Now, the legendary Ben Tennyson was going to be introduced in a big way.


*BGM - Phoenix Wright ~ Objection! 2013 - Phoenix Wright: Ace Attorney: Dual Destinies (2013)

Ben Tennyson: Hi, I'm Ben Tennyson. So I managed to stop my first robbery in Remnant, right here in the city of Vale, the same name of the Kingdom I'm in right now. The good news, I had a little help from a cute 15-year-old silver eye girl dressed like a cross between Little Red Riding Hood and the Grim Reaper, why?, because she wields a huge scythe similar to Qrow, and she totally kicks some serious butt. Anyway, the bad news is that the bad guy got away in the Bullhead or VTOL the people of Remnant called it. We have been almost blown apart from that Dust flare the thief shot from his cane if it weren't for this blonde woman or Huntress.

Next time on RWBY: Ultimate Alien:

Deal or No Deal?

Ozpin: So, you're the young man that can transform into different unknown creatures... am I right?

Ben Tennyson: Yes sir.

Ozpin: And I believe your name is Benjamin Tennyson?

Ben Tennyson: Yes.


Toy2711 here: Well everyone, how did you like this chapter? Did I satisfy you the team up of Ruby Rose and Ben 10 against Roman Torchwick during Episode 1? Leave your comments in the reviews and tell me what you think. So, that is Ben 10 as Heatblast and Diamondhead working alongside Ruby to help stop a robbery. Now, next chapter, it will be about well you know, Ben's meeting with the Headmaster of Beacon Academy himself, and along with Glynda Goodwitch. Stay tuned for how these two professors of Beacon will meet the bearer of the Ultimatrix.