You saw numerous Lincolns from numerous alternate universes, and learned that they are more dangerous for society, the planet, heck, for the entire multiverse! They can travel through time and space using their wit and feeling that drives all of them - murder. They like experimenting on people they are close to, mostly their sisters. They are natural enemies for alternate Lincolns, and whatever happens, they can't stay calm forever. Their sisters will always drive them crazy...

Lisa, this time from our reality, came out of the same yellow portal she was in before.
- Okay, farewell, my alternate self. Now i shall conduct this experiment by myself. - Lisa sat next to her laptop, analyzing something.
Suddenly, Lincoln barged in her and Lily's room.
- Lisa! - he exclaimed, making Lisa take a ray gun and shoot without looking at her brother, as he dodged. - Whoa, Lisa, what's wrong with you? It's me!
- Oh, apologies, brother. - Lisa replied, turning to him. - I just thought you might be from another universe and tried to eliminate me.
- Why would i do that? - Lincoln asked. - I just wanted to give you this PB&J sandwich that... Wait, what do you mean from another universe?
- I guess i have a lot to explain... - Lisa stood up from her chair. - Call other sisters, i need them too.
Several minutes later all of the sisters were sitting in Lisa and Lily's toom.
- So why did you gathered us here? - Lola asked. - To study our DNA? Our brain waves? Our poop?
- I would like this! - Lana exclaimed.
- No, none of this. At least for now. - Lisa answered, bringing a laptop. - Tell me, do you believe in the multiverse theory?
- Multiverse? - Lynn asked. - Boring. Come on, i have a football match in 5 minutes!
- This experiment will be more important. But don't you worry, it won't involve all of you. - Lisa took a picture of her brother and burned it. - It will involve Lincoln.
- Whew, that's a relief! - Lola replied. - He would suffer more than we are!
- He's not. - Lisa said, causing Lola to turn around in anger. - His alternate versions will. You see, i was testing my multiverse travelling device, and noticed that most of Lincolns from alternate realities are... Different, in a not do good way.
The young scientist showed them pictures of alternate Lincolns entitled "POTENTIALLY DANGEROUS SUBJECTS", and what they did in their realities.
- That's... Terrifying... - Luan said, shivering.
- And this comes from the one that goes looney on April Fools Day! - Lana snarled.
- There's a world where Lincoln's a king? - Lynn asked. - How can a wimpy 11-year-old rule the world?
- I thought about this too, but in alternate realities, literally anything can happen. - Lisa opened several portals, where one Lincoln was in his room, nervously talking with his toys, the other was on the hospital bed, apparenlty waking up from a bad dream, and the third one was getting a big bear hug from his sisters. - Most of them suffered a lot, but not enough to finally snap at us. The Lincolns i showed you are the most dangerous, and we're going to put them outside the multiverse to see how will they act with people who have similar characteristic of those who they grew up with.
While other sisters were confuzzled, Lincoln understood everything, feeling bad for himself, despite not doing anything bad to himself or his sisters.
- We'll see if they will go crazy. - Lisa repeated to those who did not understand what she said.
- Woo-hoo! I'm in! - Lola exclaimed, grabbing popcorn. - So, when do we start?
- Right now... - Lisa turned on a screen where 10 Lincolns came out of the portals, looking almost exactly like their sisters in real world, looking puzzled.
- Hello. I'm Lisa Loud, and welcome to the deep abyss...


NOTE: The "alternate realities" showed in this chapter are from following fanfics:

I Love Lincoln by Captain Dodge

Syngenesophobia by That Engineer

Sir Hugs-a-Lot by Omega Ultra