CHAPTER-1

Hey guys. This is my fan fiction story. So please don't hate me if the story is bad.

Warning: In this story Kevin and Gwen are not together, and do not like each other romantically.

Ben 10: Ultimate Alien

I do not own Ben 10 or RWBY.

It is a warm summer day in Bellwood. People are happily going around town. It was just two months back when the big secret of our hero was revealed. Since then people are not that scared to go around town. They know those aliens aren't the bad guys. But there are some people who are sceptical.

Our hero, Benjamin Kirby Tennyson is a 17-year old teenager. He wears a green jacket with white stripes and the number 10 on it, over a black t-shirt, and blue jeans. He wears white sneakers. He is the wielder of the Ultimatrix, the most powerful device in the universe, which allows him to transform into different alien species. He uses it to save the universe from different threats and warlords who want to take over their planet and universe. He works with his 17-year old cousin, Gwen Tennyson, who is an anodite, an energy being, and Kevin Ethan Levin, an Osmosian. They have encountered several dangers together and have always come out successful.

Currently, the cousins are sitting at the beach enjoying the day together. They are in their swimming attires and lying on the sand.

"It is a wonderful day, no wonder people like the beach so much", Ben said.

"Yeah, you're right", said Gwen.

"So Gwen, how are your studies going?" asked Ben.

"Great, I got straight A's this time too. What about you?" she replied.

"I don't know. I'm not that bright you know. You're always the brains in the team", he said.

Gwen blushed "Oh shut up". It always felt nice when Ben complimented her. She didn't know why.

"No. Really, you have everything. Beauty, smartness, intelligence and power. I'm just a kid with a fancy watch, who can't even save himself without it", he said sighing.

Gwen blushed even more at the beauty part, then blinked and sighed. She didn't know why he started feeling that way. She knew he couldn't be convinced, so she just let him be and went to the water.

Ben got up and walked towards the car. He started thinking about all the good times they had together. He started thinking about the times the Omnitrix ran out of charge or didn't work, how useless he was, unable to help his teammates. He reached the car and simply leaned on it looking at the sky.

Suddenly an explosion occurred. He went to investigate it. There was smoke at the site. Then a figure came out of the smoke and hit him, startling him. He fell on his back when Gwen came up to him and helped him up.

"You OK?" she asked him concerned.

"I'm fine", he replied, a bit dazed.

They both turned to look at the figure. Ben snarled at the figure.

"Albedo", they said.

"Hello Tennysons. Good to see you again", he said, smiling evilly.

"What do you want!?" asked Ben angrily, with his right hand over the Ultimatrix.

"I want my revenge on you Tennysons, so I have brought a gift for you", he replied.

He threw a grenade at them which exploded and opened up a hole sucking them in. After they were sucked in the portal closed and they were gone.

"At last, I have taken my revenge on those cousins", Albedo yelled, laughing maniacally.

In a different universe:

Four teenage girls, Ruby, Weiss, Blake and Yang, were going through Emerald forest. They were asked to go to the forest by Professor Ozpin to see if something was wrong. Ruby and Yang were walking together, while Blake and Weiss were walking together. The two sisters were talking about their love lives.

Yang: (yells annoyed) I DON'T KNOW WHY I CHOOSE ONLY JERKS!

Ruby: Calm down Yang. I'm sure you'll get a good boyfriend. Not so sure about myself though.

Yang: Why not? You're smart, beautiful, and talented. Any guy would be lucky to have you.

Ruby just sighs.

Just then a portal opens above the girls. Ben and Gwen fall out of the portal. The girls move away just in time. Ben and Gwen lay next to each other. Ben was knocked out unconscious while Gwen was awake. She slowly got up in a sitting position rubbing her head. Then she looks around and saw the four girls staring at them in a defensive position.

Gwen: Where are we?

Ruby comes towards Gwen.

Ruby: You're on Remnant.

Gwen: Huh?

Weiss: Remnant is the name of the planet you're on.

Gwen: (sighs) Looks like Albedo decided to completely throw us out of that dimension.

All girls look at each other confused. Suddenly Gwen remembered something.

Gwen: Where's Ben? (looks around frantically)

Yang: You mean that guy there? (indicates behind the girls)

Gwen sees Ben knocked out unconscious behind them.

Gwen: BEN!

She starts running towards him. He slowly gets up rubbing his head and groaning.

Ben: Did someone get the number on that truck?

Suddenly he is enveloped in a bone crushing hug by someone. He looks down and sees Gwen.

Ben: (wheezing) Gwen... need... air..!

Gwen pulls away blushing, and apologizes.

The four girls came to the cousins.

Ruby: Come with us to Beacon. I'm sure Ozpin can find a way to help you.

Gwen and Ben share a look. They know they need all the help they can get.

That's it. The first chapter of my first story is complete. Please Read and Review.