It was a usual chaotic day in the Loud House. Lisa was working on a serum to give herself superpowers.
Lisa: Yes! My superhero serum is a success! Now for a test run.
Lisa drank the serum. Her stomach began rumbling.
Lisa: Huh. That's a strange reaction.
Lisa began evilly cackling and turned all green. Her hair grew considerably and began changing colors. Her eyes began to turn red and yellow. Her clothes became a green lab coat, pink gloves, and black shoes.
Lisa (evil sounding): Well, this was a success! Now to start my own army of villains!
Lisa floated in midair and flew out the door.
David was preparing the same serum as Lisa.
David: My superhero serum is a success! Now I can finally know all the secrets of Robert's cooking...or travel to the future to see if I marry Lisa...or...
David drank the serum.
He also became evil.
David (evil sounding): Success! Now to conquer the world!
David floated in midair and flew out the door.
Lisa and David caught up to each other at the mall.
Robert and Riley were together on a date at the food court. They were eating sushi.
Lisa and David went up to Robert and Riley and had an evil smirk.
Robert: David! Lovin' the costume! I had no idea today was Halloween.
Lisa: It's not Halloween! We are now supervillains.
Riley: Oh no! Robert, you didn't tell me your brother was evil!
Robert: He's not. What's going on?
David: We're recruiting new supervillains. And since you guys aren't totally useless...
Lisa: You two could make food, but taint them with our serum. And then sell it at the mall.
Robert: No way!
Lisa's eyes began to glow.
Robert's eyes turned red.
Robert (evil sounding): Your wish is my command.
Riley looked shocked.
Riley: WHAT? Robert! What happened? What...what-
David's eyes began to glow.
Riley's eyes turned green.
Riley (evil sounding): Okay. We'll do it.
Lisa and David smirked and left.
