One and The Same (a Jacksepticeye and egos AU story)

For years, scientists have wanted to see if they could extract a human conscience and split it into its individual parts. Over and over again they tried and over and over again they failed. Until one day, when they found a way that they were sure would work. The problem: they needed a brand new test subject.

Enter Jack. Jack (known as Jacksepticeye on youtube) was kidnapped by the scientists and experimented on. His conscience was extracted and split into individual parts, his body was cloned and the main bulk of his conscience was implanted back into him. Jack survived the experience with very little physical and mental damage and the experiment was deemed a success. And so, the egos were born.

They and Jack were kept in the lab and experimented on until the opportunity arose to escape. Once they are released into the real world, Jack discovers looking after multiple clones of himself who know nothing about the outside world is going to be a lot harder than he thought.

And to make things worse, Jack is now sharing his mind with Anti. Where the others just want to live their lives as normally as they can, Anti wants revenge. He wants the world to know what they have been through and he wants the scientists to burn for what they did. He craves attention and is willing to get it in any way possible, even if that means putting the group's new-found freedom in jeopardy.