Title: Power Puff Dexter
The girls are once again fighting Mojo Jojo who has build an other dimension machine and he begins firing it up
Blossom: Give it up Mojo.
Bubbles: You're not going anywhere.
Buttercup: You're cornered.
Mojo: You'll never take me alive you brats.
The machine completely fires up
Mojo: Bye bye.
Mojo goes through the portal
Bubbles: Uh should we be worried about that?
Buttercup: Eh whatever dimension he went to, it's their problem now.
Blossom: Buttercup? I think we should go follow him.
Buttercup: Aww.
We now cut to the dimension Mojo went to; which is the dimension of Dexter's Laboratory
Mandark: I will get my revenge on you Dexter. You'll pay for what you did.
Just then, Mojo appears in a beam of light
Mojo: Hmm, dark suit, secret lab, evil look, you must be a villain.
Mandark: Who are you?
Mojo: I am Mojo Jojo.
Mandark: Who send you here? Was it Dexter?
Mojo: No. I came here from another dimension to get away from the Powerpuff Girls.
Mandark: Hmm, maybe you can help me get revenge on my arch nemesis Dexter.
Mojo: Does he have superpowers?
Mandark: No. He is a super smart scientist. I have a major crush on his sister older Dee Dee but she doesn't feel the same.
Mojo: Your point being?
Mandark: How about we kidnap his sister for revenge?
Mojo: Oh I get it. Take the girl of your dreams hostage so smart boy comes and saves her and we trap him too.
Mandark: Exactly.
Mojo: I like that.
They evil laugh to the camera
We now cut to Dexter who is working on another experiment when Dee Dee comes down
Dexter: Dee Dee what have I told you about being in my laboratory?
Dee Dee: I'm sorry.
Suddenly the walls burst open and it's Mandark and Mojo
Mandark: Dexter!
Dexter: Mandark!
Mojo takes Dee Dee hostage
Dee Dee: Dexter help!
Dexter: You let her go Mandark!
Mojo: Sorry we can't do that.
Mandark: Bye bye.
Mojo and Mandark leave
Dexter: This is bad. This is so bad. Even though Dee Dee is stupid, she doesn't deserve to be taken hostage. Especially by Mandark. I got to go save her.
Suddenly the Powerpuff Girls appear from the dimension Mojo used
Dexter: Who are you?
Blossom: We're the Powerpuff girls.
Buttercup: By any chance have you seen a green talking monkey near by?
Dexter: Yes. He teamed up with my nemesis and they just kidnapped my sister Dee Dee.
Bubbles: Dang it! We missed him.
Blossom: Do you happen to know where they went?
Dexter: I think. I know we just met and all, but can you help me save my sister.
Bubbles: Of course.
Blossom: We are the Powerpuff Girls after all.
Buttercup: We fight crime.
Bubbles: And save the world.
Dexter summons his robot
Blossom: Nice robot.
Dexter: Thanks.
They get in the Dexter robot
Dexter: Hang on Dee Dee. We're coming to save you.
Dee Dee is tied up to a chair
Mandark: Hello Dee Dee.
Dee Dee: Let me out of here Mandark!
Mojo: Never.
Mandark: I can't let you go sweet cheeks. Not unless if you agree to be my girlfriend.
Dee Dee: Ew as if.
Mojo: Then we'll never let you go.
Mandark: Aw sweet revenge. Thanks for the help Mojo.
Mojo: No problem. I think I'm going to like it here in this dimension.
Suddenly the Dexter Robot breaks the walls
Mandark: Dexter!
Dexter: Mandark!
Mojo: Powerpuff Girls!
Blossom, Bubbles, and Buttercup: Mojo Jojo!
Dee Dee: Dee Dee!
Dexter: Give me back my sister you monsters!
Mandark: Never!
Mojo: We will never let her go!
Blossom: Fine then I guess we have to fight
Mandark: Alright. If you win then Dee Dee goes free.
Dexter: Okay.
Mojo: But if we win, then we take all of you hostage.
Dexter: Alright let's dance.
Dee Dee: Dexter be careful.
Dexter: Relax I know what I'm doing.
Mojo: Attack!
Buttercup: Oh I'm so ready for this!
Dexter fires missiles at Mandark while the girls use their eye beams
Mandark: Ow that hurt.
Dee Dee: Ha ha.
The girls then beat up Mojo and they send him and Mandark to jail
Dexter: Dee Dee, you okay?
Dee Dee: Yeah.
The girls free Dee Dee and they tell Dexter and Dee Dee everything about Mojo
Dexter: So when your dad created you, the Chemical X mutated him?
Blossom: Yep.
Bubbles: That's correct.
Dee Dee: Thanks for saving me.
Buttercup: No problem.
Blossom: It's what we do.
Dee Dee: What's it like to fly?
Bubbles: Oh it's fun.
Dee Dee: Do you have all superpowers?
Dexter: Dee Dee I know you have a lot of questions but I think they need to go back to their dimension.
Blossom: Glad your sister is safe.
Bubbles: Bye.
Buttercup: Later.
The girls teleport back to their dimension
Dee Dee: What a day.
Dexter: Tell me about it.
Dee Dee: Do you know if they have every power ever?
Dexter: Okay I know you have a million questions to ask, but we're out of time.
Dexter winks at the camera
Narrator: And so once again the day is saved thanks to The Powerpuff Girls.
The End
Note: This is my first story/crossover for The Powerpuff Girls and Dexter's Laboratory
Note #2: If anyone is out of character, my bad. I haven't seen these shows in a long time and I never seen the 2016 reboot of the Powerpuff Girls nor do I want to
Note #3: Dexter breaks the 4th wall by saying they are out of time and he winks to the audience. Mojo and Mandark also break the 4th wall by evil laughing at the camera
Note #4: I might make a sequel to where Dexter and Blossom meet up again and start dating