Hey, everyone! I'm back with another chapter of Ben 10 meets DC Superhero Girls! Let's begin!

I DON'T OWN ANYONE IN THIS SERIES!*

It was another school day in Metropolis, and Zee was walking down the halls, while the students waved to Zee as she waved back. That's when she bumped into someone. And that person was Casey Krinsky.

Casey Krinsky: Oh, no. I'm so sorry. I am such a klutz.

Zee: Are you all right?

Casey Krinsky: [gasp] You're... You're... I-I should be asking if you're all right. Uh, silly ol' Casey Krinsky. Of course I bump into Zee Zatara, the most popular girl in school. [as Zee give Casey her bag] [gasp] Your bag?

Zee: It's yours now.

Casey Krinsky: Really? The most popular girl in school. And the nicest.

Zee: [giggles] Oh, you. What did you say your name was? Cassie?

Casey Krinsky: Uh, well, sort of. It's... Casey Krisnky.

Zee: Nice to mmet you, Casey.

Casey Krinsky: Huh? [happy gasp]

Zee: See you around. [walks away]

Casey Krinsky: You'll... see me around? [gasp excitedly]

Later, Ben, the Dragon Riders, Camp Cretaceous, and the girls were apparently running to lunch.

Kara: Come on, dude! Or we'll be too-

They were too late! They were out of tater tots.

Kara: Great.

Ben (CC): [pouts] Oh man!

Babs: [saddened] Did we miss it? AGAIN?

Diana: Deceivers. How can they call it "Tot Day" if the supply of tots do not last a full day?!

Kenji: I know! That just sucks!

Tom: Totally!

Casey Krinsky: [waving at them] Hey. Hey, Zee. Over here! Over here!

Zee: Look, it's my new friend. Ladies, I'd like you to meet... [gasp] Eh...

Casey Krinsky: Oh, um, Casey Krinsky. Here, I, um, I got you all some tots. [gives them all tots]

Kara: No. Way.

Karen: You got us tots? That's so sweet!

Kara: Thanks, Kazinsky. You're all right.

Jun: Yeah!

Darius: Nice!

Casey Krinsky: Oh, it was my pleasure. I'd do anything for Zee Zatara. [gives Zee tots] [creepily] Anything.

Zee: [chuckles nervously]

Ben: Okay?

The next day, as Zee arrived at school, and was getting out of the limo...

Casey Krinsky: [appears] Hi, Zee!

Zee: [gasp]

Casey Krinsky: [hands her paper and coffee] I typed up you itinerary for the whole day and picked up a half-caf vanilla latte. Your favorite, right?

Zee: [chuckles nervously] Thanks. [she walks away]

At the mall, Zee was shopping for clothings. That's when she saw Casey Krinsky cosplaying as Zee! When she saw that, she left. As she was walking out, someone was watching her. Zee was currently in the school's locker room, as she was about to get a few things from her locker, she saw a certain someone in the refrection of her mirror.

Casey Krinsky: I noticed a conflict on your calendar, so I nad Roxanne move your dance recital to next week so you can attend Sandra's quinceanera.

Zee: How did you get my calendar?

Casey Krinsky: [pulls out her phone] It's on your phone.

Zee: [takes phone] [soft gasp] How did you get my phone?

Casey Krinsky: [pulls out her purse] It was in your purse.You should get a lock on that. Here's a lock. The combination is your great-grandmother's birthday backwards. See you tonight. [walks away]

Zee: Uh... tonight?

Casey Krinsky: Check your calendar!

Zee's phone then beeps, showing a message from Casey Krinsky saying "Bonding time" at 5pm, causing her to sweat nervously. The next day, Zee was in the cafeteria, filling her nail nervously. That when her friends came towards her.

Kara: Yo! Where's Carly?

Zee: I asked her to go across town to get my Stella-Gabrielles re-heeled.

Kara: Uh! On Tot Day?!

Zee: I need to talk to you. Alone. That girl is obsessed with me.

Jessica: Who, Kerry Clemente? She's the nicest person ever.

Darius: Yeah, she didn't seem that weird.

Alex: Oh yeah, totally.

Zee: That's what she wants you to think! Meanwhile, she's getting me lattes, helping me with my math test, rearranging my social calendar so I can attend every event I want to!

Ben: Wow, that's so much info that she knows.

Jessica: Uh... And?

Casey Krinsky: Oh, Zee~

Kara: Hey, there she is! AND you brought tots?

Casey Krinsky: I cut a deal with the lunch lady before I left, and I re-heeled the Stella-Gabrielles, and I got a little gift for everyone on the way back.

The gift she had was a box of kittens, as Diana, Karen, Jessica, Babs, and Kara cuddled them.

Ben: Wow!

Eugene: Yeah, wow.

However, Zee didn't have one, and she sat there heartbroken.

Casey Krinsky: [creepily] [petting a kitten hard] I named this one... ZEE.

Zee: AAH!

Ben: Yeah, that is really creepy.

That's when Zee went to the bathroom to wash her face. As she did that, Casey appear from behind her.

Zee: AAAH! [angry] That's it, that's it, THAT'S IT! I had ENOUGH! I am not your BFF, Kaitlyn! You've got to stop following me around like... like... SOME LITTLE LOST KITTEN!

Casey Krinsky: Uh, I'm sorry. [tearing up] It's just... Oh, it's all right. I wouldn't want to be friends with me either.

Zee: [sighs] Katy, wait.

Casey Krinsky: Casey.

Zee: I... I'm sorry, too. I guess I just misunderstood. You were really nice to do all those things for me. Anyone would be lucky to have you as a friend. [hugs her] [chuckles] Ok. Ok, that's good. It's uh... [chuckles nervously] time to get go now.

Casey Krinsky: Let go...?! [throws Zee away] You have everything a girl could ever wish for. Popularity, beauty, friends. And I'll NEVER let go until...

Suddenly, her body started crystalizing, and she transformed into Zee!

Zee (Casey Krinsky): I HAVE IT TOO!

Zee: Wh... Who are you? [chanting spell] Huh? My magic...

Zee (Casey Krinsky): Your magic? [chanting spell just like Zee uses her chanting spell]

The magic then bounced around the bathroom, nitting Zee, causing her to turn into Casey!

Casey Krinsky (Zee): [gasp]

Zee (Casey Krinsky): You mean... MY magic. You really ARE the most amazing girl in school. [laughs] Oops. I mean... WERE... the most amazing girl in school. Well, who needs them anyway! I can always ruin your life!

Casey Krinsky (Zee): [gasp] You wouldn't!

Zee (Casey Krinsky): Oh, really!

That was when she left the bathroom and went towards our heroes!

Diana: That's how it was on Themyscira. [notice "Zee"] Hi!

Casey Krinsky (Zee): HEY!

Zee (Casey Krinsky): [groans]

Casey Krinsky (Zee): That girl is an imposter!

Jessica: You mean Zee?

Casey Krinsky (Zee): Yes! I mean no! I mean... I mean, COME ON! Just look at her!

Zee (Casey Krinsky): See? Totally obsessed with me.

Jessica: Wow, Zee. You were right about her.

Babs: Yeah. No tots are worth this.

Eugene: Oh yeah!

Kenji: Totally!

But Ben looked at both "Zee" and "Casey's" eyes and thought...

Ben: You guys go on ahead, I'll just chill here for a bit.

Jessica: Oh, sure.

Soon, they left. That's when Ben went towards "Casey" to see her.

Ben: What do you mean that, "Zee is an imposter"?

Casey Krinsky (Zee): Ben, it's me Zee, please reconise me!

Ben: There's only one way to find out. [to Omnitrix] Scan dna from user in front of me, confirm it's Zee.

Soon, the Omntrix scan her to see if she's really Zee.

Omnitrix: Dna confirm, Zee Zatara is present.

Ben: Wow, it really is you. What happened?

Casey Krinsky (Zee): She has some weird mirror powers that cause her to steal my magic and switch bodies with me!

Ben: Great, the Kevin 11 in this universe.

Casey Krinsky (Zee): Who?

Ben: My friend. You go after your friends, while I get my grampa!

Casey Krinsky (Zee): Right!

Soon, they went in different directions! Meanwhile, Casey, who was imposing as Zee, was at Sweet Justice with the Dragon Riders, Camp Cretaceous, and the girls, with a smile on her face.

Jessica: Is something wrong, Zee?

Darius: Yeah, you good?

Zee (Casey Krinsky): Oh, no. Not at all. [eyes sparkle] I just don't see how life could ever get any better than this.

Kara: I can. Hot sauce!

Jun: Go for it, Babs.

Babs: [pulls the lever]

Then, they all fell down!

Zee (Casey Krinsky): [screams] [looks where she was] [gasp]

She was seeing the base of the Superhero Girls with all their stuff in it.

Zee (Casey Krinsky): You're the... the Superhero Girls?

Babs: Uhhh... Yeah.

Ben (CC): Don't you know that?

Zee (Casey Krinsky): [cackles wickedly] Not for long.

Suddenly, she used her mirror powers to absorb the girls' powers and abilities, becoming an ultimate Superhero Girl in town!

Mega Casey Krinsky: Kneel before me, Metropolis! For I AM MEGA CASEY KRINSKY!

The citizens screamed and ran away in terror!

Mega Casey Krinsky: I WILL BE THE MOST POPULAR GIRL IN SCHOOL... AND THE MOST POWERFUL HERO IN THE WORLD! PLUS, I'M SUPER HOT! [walks away]

Babs: Dude, did she just say Mega Cammy Kombucha?

Kara: Who cares! We got some heroine to do! [jumps up and falls down] I think they took our powers.

Tom: What?!

Diana: Fear not, Kara and Tom! If we work together, this villian is-

Then, she was tied up in the Lasso of Truth.

Diana: [gasp] We have no chance.

Darius: Oh boy!

Alex: This isn't good!

Mega Casey Krinsky cackles loudly and wickedly. She then kicks Diana, the Superhero Girls, the Dragon Riders, and Camp Cretaceous back inside Sweet Justice.

Mega Casey Krinsky: IT'S THE ULTMATE MAKEOVER! FINALLY THAT MOUSY SAD LITTLE GIRL IS GONEE! [laughs wickedly] [notices Zee] OR at least she WILL be.

Four Arms: Go! I'll hold her off!

Casey Krinsky (Zee): Right!

Zee was now running towards the pier, as Mega Casey Krinsky was flying after her.

Four Arms: You're not gonna hurt my friend!

Mega Casey Krinsky: AH, BEN 0! JUST THE LOSER I WANT TO FRY!

Four Arms: You may have a chance against me like this, but I bet you're no match for... [activates ultimate form]

He then goes Ultimate! He's a gigantic, muscular blue humanoid with two arms by default. He has purple muscles exposed across his body that can over-stack on top of each other. His feet have an extra two toes on the backside. He wears black overalls with white stripes. The Ultimatrix is located on his left shoulder.

Ultimate Four Arms: Ultimate Four Arms! [cracks his knuckles] Bring it!

Just as he was about to punch her, orange energy-like ropes wrap around Mega Casey Krisnky's arms!

Mega Casey Krinsky: HUH? WHAT IS THIS?!

?: That would be me.

That's when a orange portal opens, and came out Sinister Strange!

Sinister Strange: Sorry, Casey, but you're not hurting these people.

Mega Casey Krinsky: WHO ARE YOU?

Sinister Strange: Just someone that has the powers of the Mystic Arts in another universe.

Ultimate Four Arms: What?

Mega Casey Krinsky: MYSTIC ARTS! [cackles] I CAN BEAT THAT!

Sinister Strange: Well, you'll find that our power, equal, to yours!

Mega Casey Krinsky: Wait, our?

That's when a truck came crashing onto her! Then Ultimate Four Arms look up to see Thor up there, revealing that The Guardians of the Multiverse are here!

Thor: [whoops] See, simple as that.

Star Lord T'Challa: Yeah, if you were trying to piss her off!

That's when Mega Casey Krinsky lifted the truck off of her!

Mega Casey Krinsky: [grunts] [sees the Guardians] AND WHO ARE YOU SUPPOSE TO BE?!

Captain Carter: Just the heroes that gonna kick your ass! [she and Widow throw their shields at her]

The two shields hit her on the back and front of her head.

Mega Casey Krinsky: I DON'T KNOW WHO YOU ALL ARE, BUT THIS ENDS NOW! [creates Green Lantern missiles contructs]

Then Strange created a protal that send them back at her!

Mega Casey Krinsky: UGH! [growls]

Ultimate Four Arms: [grabs her] [to Strange] Go after my friend, she need protection!

Gamora: Right!

Soon, they went to find her.

Thor: Wait, what does she look like? 'Cause he didn't tell us what she looks like.

Sinister Strange: Don't worry, I can sense her life force. [sees her] There she is!

Casey Krinsky (Zee): [sees them coming towards her] Who are you?

Captain Carter: We're here to help you. Now, all we need a plan.

Zee then sees the House of Mirror and ran inside it. Mega Casey Krinsky knew what she was planning, so she shrank out of Ben's arms and flew into the House of Mirror, searching for Zee.

Mega Casey Krinsky: Hmph! You can't hide forever!

She and Zee looks at each other and Mega Casey Krinsky tries to punch her, but it was just a mirror.

Mega Casey Krinsky: Hmph! Smoke and mirrors? Princess of Prestidigitation? I expected BETTER from you. [Zee goes away] Come out here and FIGHT!

She punchs Zee again... and again. However, all she was punching were mirrors.

Mega Casey Krinsky: I'M SICK OF SEEING MY PATHETIC LITTLE FACE! I MEAN YOUR FACE! I MEAN... [scream loudly]

Casey Krinsky (Zee): What's the matter, Casey? Don't like what you see?

Mega Casey Krinsky: NO! NOBODY DOES!

Casey Krinsky (Zee): You're wrong! I like you. At first. So did my friends. It was the evil plot to change who you are that mucked it all up.

No matter what she said, Mega Casey Krinsky kept smashing mirrors.

Mega Casey Krinsky: STOP IT! QUIET!

Casey Krinsky (Zee): You could had the friendship and acceptance you wanted if you had only accepted yourself.

Mega Casey Krinsky screams the ultimate louder spell which cause the entire room to shake. it was able to relinquish Casey of her powers!

Mega Casey Krinsky: NO!

Then, there was nothing but shattered glass scattered around, as Casey was crying.

Zatanna: How about a fresh start, Casey? Friends?

Casey Krinsky: Oh... [angry] FORGET IT! I'LL GET YOU FOR THIS, ZEE ZATARA! SOON THE WHOLE SCHOOL, THE WHOLE CITY, WILL KNOW WHO THE SUPERHERO GIRLS REALLY ARE! YOUR CRIME FIGHTING DAYS ARE OVER! [runs away] OVER!

However, she was stopped by Guardians, and it seemed that to be angry.

Casey Krinsky: [nervously] Hi...

Ben 10: [coming from behind them] Going somewhere?

Casey Krinsky: Hey, Ben...

Sinister Strange: Don't worry, Ben, I'll take care of her.

Black Widow: What are you going to do?

Sinister Strange: [creates portal under Casey] You don't want to know. [to Ben] Better go to your friends.

Ben 10: Right! [runs inside]

He then goes inside to see Zatanna.

Ben 10: Z, you good?

Zatanna: Yeah, I'm good.

That's when the rest of the heroes showed up.

Wonder Woman: We are so sorry, Zee.

Zatanna: [sighs] It's okay. You know who I am now. And so will everyone else, I suppose.

Ben 10: I don't think that the Mystic Arts guy will teach her some manners.

A few days later, Casey Krinsky was released from Strange's things, she was ready to tell everyone the big secret.

Casey Krinsky: They're lying to you, everyone! Diana Prince is Wonder Woman! And Kara Danvers, she's Supergirl!

Boy: And I'm Bumblebee.

Casey Krinsky: No, Karen Beecher is.

Boy #2: Guess I'm Ben 10.

Casey Krinsky: That's Ben Tennyson!

Girl: Oh, and you're Zee Zatara, right? That's what you said yesterday.

asey Krinsky: No, I was Zee Zatara, but now I'm not! Now I'm ME again! I'm CASEY KRINSKY! CASEY KRINSKY!

End