A/N: This story mainly happens around the time when Ben was 16, but soon goes into things that happened when he was 20.
It was one of the special days for Ben, because he was going on a date with his girlfriend Catherine. "Hot date?" Gwen asked jokingly, "You're one to talk, you're plannin' to do the same with Jeffrey on Thursday." Ben replied back in the same manner. Jeffrey used to be Gwen's worst bully, but now he's her boyfriend. Somewhere along the line, Jeffrey realized that what he was doing wasn't going to work for him in the long run so he stopped. Eventually, he caught feelings for Gwen. And Gwen had the same thing happen to her towards Jeffrey. Eventually, the two got together. At first, people including Ben wanted them to stay away from each other. But they couldn't do much of anything, because at the end of the day it was Gwen's decision. And the relationship had worked out. Jeffrey became a better person, and Gwen finally found a boyfriend.
After Ben put on his suit, he got ready to go out. He bought a Chevrolet Corvette C6 and modified it to be suitable for taking someone on a date. It looked stylish and classy now. With that, Ben went out and got inside the car before driving off. "Pickin' her up at her place, see ya'll later." he said, before closing the right window and driving off.
VROOOM!
A Few Hours Later...
After Ben got to Catherine's house, he stopped his car before getting out of it and ringing the doorbell.
DING DONG!
A few seconds later, someone came out. It was Catherine's mother. "Oh, hello Ben. Catherine's upstairs, she's almost done." she said, "Alright. I'll wait then." Ben replied before doing so. A few more seconds later, Catherine came downstairs and near the door. She was dressed in an elegant light blue dress. It sparkled as it reflected the sun's rays, it had some glitter on it as well.
"Wow... C-Catherine... Y-You look so..." Ben began to speak, but before he could finish what he was going to say Catherine came up to him, held his hand and said "C'mon!" before winking. This made Ben blush even more. Ben and Catherine then went into the Corvette, before Ben drove off.
VROOOM!
After Some Time...
Ben had found a good restaurant to go on a date with Catherine. -Outback Steakhouse. Catherine loved the place. Once she and Ben were inside the restaurant, they both waited in line to order. Ben offered Catherine to be let to sit somewhere while he would be the one to order what she and he ordered. However, Catherine refused and instead insisted to be with Ben all the time. So Ben just accepted what she said and let her be with him.
A Few Minutes Later...
It was finally their turns, Ben and Catherine placed their orders. After that, they found a good place to sit. Just then, Ben got up and said "I'll be right back.". Catherine nodded, before Ben left. However, what they both didn't realize was that someone was watching them before Ben left. It was a man that looked like Ben, but it wasn't. There was something familiar about him. -It was Evil Ben! "Hehehe, now's my chance." Evil Ben said with a wicked grin, before waiting for a few more seconds. Then, he walked over to Catherine.
"Hey sweetie.~" Evil Ben said as he got close to Catherine, "Oh, Ben. You're back." Catherine replied. Just as Evil Ben was about to make another move, the real Ben returned. When he saw Catherine talking to Evil Ben, he became furious. He went over to Evil Ben before yelling "-WHAT'RE YOU DOING COPYING ME AND TALKING TO MY GIRLFRIEND?!", "-B-BEN?!" Catherine ended up saying in shock. "CATHERINE, STAY BACK! THAT'S AN EVIL VERSION OF ME!" yelled Ben, Catherine then jumped back in shock and fear. She couldn't believe it! Did Evil Ben really just try to trick her into doing things with him?! "-YOU MOTHERFUCKER!" Ben yelled in rage, before quickly punching Evil Ben hard in the face making his face bleed profusely.
BAM!
"AGH!"
CRASH!
Evil Ben ended up crashing into empty tables and chairs. Then, Ben picked him up again before beating him up.
"RAAH!"
BAM! BAM! BAM! BAM!
When people saw what was happening, they realized who the person Ben was beating up was. They screamed and ran for their lives. After Ben beat up Evil Ben, he punched him out of one of the restaurant's windows.
"RAAH!"
BAM!
CRASH!
THUD!
"Oomph!"
Evil Ben ended up bleeding badly. But he didn't seem affected much by the bleeding. Instead, he laughed wickedly before starting to run away. "-GET BACK HERE YOU LITTLE SHIT!" Ben shouted as he chased after him. However, Evil Ben turned into XLR8 and quickly disappeared into the distance.
FLASH!
FWOOSH!
"HAHAHAHAAA!"
Ben was even angrier now and went XLR8 as well before chasing after him, Catherine was able to follow him using her gigalomaniac powers.
FLASH!
FWOOSH!
Some Time Later...
At another restaurant, one of Ben's friends named Ethan was having a good time with his girlfriend nicknamed "Ampere". Ampere stood up to get something. While she was gone, Evil Ben accessed one of his most powerful forms. -The gigalomaniac form. He was going to use this form to trick Ethan and hopefully make Ampere mad.
FLASH!
Once Evil Ben was in gigalomaniac form, he changed his form to look like Ampere. Then, he walked right up to Ethan. "Hey baby.~" he said once he was close to him. "Oh, hey baby. That was quick." Ethan replied, not knowing who "Ampere" really was. However, before Evil Ben could make another move Ampere came back from the counter. She yelled "-WHO THE FUCK IS THAT?!" angrily, "WH-WH-WH-WHAT?!" Ethan ended up saying in shock as he looked at the real Ampere. When he looked back at Evil Ben, he saw him back in his real form. "AAAHHH!" he screamed in shock as he saw him, "Surprise motherfucker!" Evil Ben said before laughing.
Ampere was even angrier this time, she tried to punch Evil Ben but he managed to get away using his XLR8 form again. "That's not Ben, Ben wouldn't do something like this. That's Evil Ben. Fucking asshole." said Ethan, "I know, you told me he's prone to doing shit like this." Ampere replied.
Even More Time Later...
Evil Ben managed to get to another restaurant. This time, Kenneth who was another one of Ben's friends and his girlfriend Kelly were in there. Evil Ben changed into his gigalomaniac form again, before making himself look like Kelly. Then, he quickly went up to Kenneth before suddenly kissing his cheek. "WH-WHAT THE-?!" Kenneth ended up saying in surprise, before he looked up and saw what appeared to be a doppelganger of his girlfriend. Kelly was angry, and tried to catch her imposter. However, Evil Ben switched to XLR8 again before running off once more. "HAHAHAHA!" he laughed crazily as he ran away, "Wh-What the fuck?!" Kenneth ended up saying as he and Kelly were now outside the restaurant.
As Evil Ben continued running, the real Ben and Catherine were still following him. However, Catherine said "Ben, I-I think I need to stop for a while. I can't use too much gigalomaniac energy or else my body will age rapidly.". "I can carry you, then we can catch him." Ben replied, "Sounds like a good plan." Catherine replied before she got on Ben's back. Ben then continued running.
Meanwhile, Evil Ben was still laughing crazily as he found the things he just did really funny. However, he wouldn't be laughing for much longer.
"There he is!"
FLASH!
"Agh!"
THUD!
FWOOSH!
Catherine managed to hit him with a gigalomaniac energy blast from her sword while she was on Ben's back, this caused him to go flying onto the ground and crash into a rock wall. Ben then stopped near him, before putting Catherine down and quickly grabbing him by his neck hard.
FWOOSH!
"Ack! Ack! Aggh!"
"LISTEN HERE YOU LITTLE SHIT! IF YOU EVER CAUSE TROUBLE FOR ME, CATHERINE'S AND EVERYONE ELSE'S LOVE LIFE AGAIN I SWEAR TO GOD-"
BAM!
"Agh!"
THUMP!
"Oomph!"
Ben tried to warn Evil Ben that if he ever tried ruining people's love lives again he would do something that he would probably regret later on. However, Evil Ben didn't take much notice of his warning and instead gave him a hard headbutt which made him fall down. This was the last straw for Ben, "That's it! I'm beating your fucking ass to the ground!" he yelled. "Try." Evil Ben taunted as he made a "come at me" gesture at him. This made Ben even angrier causing him to dash towards him.
FWOOSH!
BAM! BAM! BAM!
Ben and Evil Ben tried killing each other, but there was no clear winner right now. Fortunately, Ben had his friends who could fight on his side and they helped him. Ethan got two highly modified M4A1 rifles and started firing at Evil Ben with them, Ampere got her powered electric guitar and sent electric waves at Evil Ben with it and Catherine used her gigalomaniac powers to try and knock out Evil Ben.
BANG-BANG-BANG-BANG-
KZZT!
FLASH! FLASH! SLASH! FLASH!
Some of the attacks hit Evil Ben, weakening him. This gave Ben a chance to deliver a quick and hard punch to his head making him fall down again.
"HEEYAAH!"
BAM!
"Agh!"
THUD!
"Motherfucking-" Ben shouted, before he tried to kill Evil Ben using one of his claws. However, Evil Ben quickly got back up before disappearing into the distance again. "Don't let him get away! He'll terrorize more people and their love lives!" Ben shouted again, before he and some of his friends went after him. However, soon Evil Ben was truly gone. "Dammit!" said Ben, before reverting back to his normal form and walking out of the area with Catherine and his friends who could fight.
A Few Hours Later...
"Fuck that guy, he kissed me in front of my girl."
"He fuckin' tricked me!"
"I know, I'm trying to find his current whereabouts now."
Ben was trying to track down where Evil Ben currently is with Max's help. But unfortunately, the Rustbucket's GPS system found nothing. "Sorry Ben, I got nothin'." said Max, "It's alright, thanks grandpa. Next time I see him, I'm gonna beat his ass on the ground." Ben replied before he, Catherine and his other friends left.
Some Time Later...
Catherine talked about how she was scared when she realized that the Ben who tried making moves on her at Outback Steakhouse was Evil Ben, but Ben told her not to worry and that the second he sees him again he would make sure that that would be the last time he would. Catherine then hugged Ben, who returned the hug back. Ben was happy that Catherine was safe, but very, very angry about what almost happened to her.
Even More Time Later...
Evil Ben decided that the damage he had done today wasn't enough, and decided to take someone he knew into this dimension.
FLASH!
"And here we are, Monika. The pathetic goody-two shoes Ben's dimension."
"Mmm, not as great as the dimension I live in. But I'm not here to admire the scenery either."
"Then let's get down to business!"
After Evil Ben showed Monika our Ben's dimension, they started to ruin many people's days. They ruined their relationships. Evil Ben would use his forms, especially the gigalomaniac one. And Monika would make people not like each other anymore using the power of her DI-bow's arrows. Soon, many people were not liking and even hating each other for no reason.
"Hahahaaa! We got 'em!"
"If I can't have true love, why should they?"
Evil Ben and Monika continued ruining people's relationships. Just then
"That's as far as you two are gonna go!"
"Huh?!"
"H-Huh?!"
FLASH!
"Humungousaur!"
"Uh oh-"
"RAAAGH!"
BAM!
"AAH!"
"AAH!"
Someone familiar stopped them. -It was the real Ben! He turned into Humungousaur, before charging at them and trying to smash them with his tail. However, Evil Ben and Monika managed to get out of the way in time. But they were sent flying. They hit the ground hard. Ben tried to rush towards them again, but they got out of the way before he could try to do anything to them this time.
"RRAGH!"
FWOOSH!
Luckily, Catherine was there to help. She trapped them both using her gigalomaniac powers. Ethan then threw some grenades at them.
FLASH! FLASH!
"Wh-What the fuck?!"
"H-Hey! Wh-What the-?!"
FWOOSH! FWOOSH! FWOOSH!
BOOM! BOOM! BOOM!
Smoke rose as the grenades exploded. However, Evil Ben and Monika were unaffected as they were both protected by Monika's gigalomaniac powers. Monika then let down the energy shield she made, before firing energy charged arrows.
FWIP! FWIP! FWIP!
Ben batted the arrows away with his tail, before smashing the ground again. He made Evil Ben and Monika fly once more. They ended up crashing into the ground once again.
THUD!
BAM!
Catherine tried trapping Evil Ben and Monika once more. However, Monika's powers were able to resist against Catherine's. Just then
"RRAGH!"
SMASH!
"Ungh!"
"Agh!"
Ben jumped high into the air, before smashing both Evil Ben and Monika into the ground. Smoke rose up once again. When it cleared, it revealed that Evil Ben and Monika were knocked out. "Your plans just got extinct!" said Ben, before switching back into his human form.
FLASH!
Some Time Later...
Evil Ben was taken away by the plumbers, but Monika managed to escape. As the plumbers left, Ben and Catherine were left alone together. Their friends had already went their ways. "Sooo... let's go home?" Catherine asked, "Sure. I'll take you to your home." Ben replied. "Um, actually... I was wondering if I could spend the night at your place?" Catherine added while blushing. Ben blushed back, but said "Alright. C'mon.".
A Few Hours Later...
Ben and Catherine stayed at Ben's house, he had his own house now. It was colored in a nice shade of light blue with a white roof. He was able to afford it and everything in it with the money he would sometimes get from busting and stopping villains and some side jobs. Yes, he has side jobs and it's a lesser known fact. "Nice place." Catherine said smiling, "Ah, it's nothing. I just bought it with the money I get from the jobs I do." Ben replied. "It's beautiful." Catherine added, "Th-Thanks." Ben replied again blushing a bit.
Some More Hours Later...
A few hours went by. Ben and Catherine were laying on the bed. "Hey Ben, wanna stick your "D-sword" in me?~" said Catherine while she and Ben were flirting with each other. "I'm gonna be stretchin' that sheathe.~" Ben replied back. "Ooh.~" Catherine couldn't help but say, before she began to pull on the side of her clothes. Soon, Ben was pulling his shirt upwards.
Even More Time Later...
"That was fun.~" Catherine said seductively as she and Ben had the sheets covering them, "Y-Yeah...~" Ben managed to reply back with the love he was feeling so much of right now. As Ben and Catherine were lying next to each other, Catherine said "Hey Ben?". "Yeah?" Ben asked looking at her, "R-Remember the time when we were kids?" Catherine added. "Yeah, those were simpler and good times." Ben replied back. Ben and Catherine both remembered all those times they shared together as children. Each moment may not have been as much compared to being with their other friends, but they certainly held more meaning and memories. Not that their memories with their friends didn't, it's just that there was something more with those memories than some aspects of the memories with their other friends. Ben and Catherine continued thinking about them, before they ended up falling asleep and cuddling each other.
4 Years Later...
It was time for Ben and Catherine to get married, they were both dressed in wedding attire. Their friends were there, and so were Gwen, Max and Catherine's parents.
"Do you Benjamin Calvin Tennyson accept Catherine William Millers as your wife?"
"I do."
"And do you Catherine William Millers accept Benjamin Calvin Tennyson as your husband?"
"I do."
Ben and Catherine accepted each other as husband and wife. Then, the priest soon continued with "Benjamin, you may now kiss the bride.". Which he did. Everyone cheered and roared in applaud as they saw the newly married couple. Some of the people especially some of Ben and Catherine's friends roared loudly in applaud.
WOOHOO!
YEAAAHHH! MY MANS FINALLY DID IT! WOOO!
CONGRATS CATHY!
Catherine had now become Catherine Tennyson. And soon, she and Ben rode in the same Corvette that Ben used when he took her out on that date. Only this time, it was painted white and decorated with white ribbons and roses. The license plate read "JUST MARRIED". Soon, Ben drove off into the distance with Catherine. Everyone clapped and cheered as they saw them go into the distance.
A Few Hours Later...
Ben and Catherine spent the night at Ben's house. There, they did "it" again. They had more passion and love for each other. And so they spent the night doing "it".
Some Time Later...
"Ben! Ben!"
"What? What is it sweetie?"
"Look!"
"Oh my God..."
Soon, Catherine became pregnant. The test results showed positive. When she showed them to Ben, Ben was overjoyed. He was going to be a father, "The doctor said they're twins! One boy and one girl!" Catherine added excitedly. "I'm gonna be a father!" Ben repeated in more joy as he hugged Catherine tight.
So Much More Time Later...
Ben and Catherine had twins named Sean and Hazel. When they turned 10, they both got their own Omnitrices. Theirs looked like the version of the Omnitrix Ben had when he was 16. Azmuth helped in creating them, he believed that the version of the Omnitrix that Ben had when he was 16 was the most technologically advanced one. And he was right, the touchscreen face and the pop up dial after that were so much more convenient and faster than manually twisting the dial and slamming down on it. However, he couldn't let the Omnitrix remain that way back then because there were more parts to maintain in the Omnitrix and they were a bit harder to maintain as well. And since his lab got destroyed during that point, he had limited resources to make the Omnitrix even more technologically advanced back then. Eventually, the Omnitrix took on a shape similar to Ben 10,000's Omnitrix when our Ben became 20.
Ben and the new members of his family ended up living a great life. With the occasional threat of villains of course since they are a family of superheroes. But there was practically nothing they couldn't handle at this point, and the Tennyson Tower kept them safe as well. With the way things were going right now, Ben was sure he and his family would live a great life for a very, very long time.