So for a while now I've had this Au of 'failsafe' in my head where things went slightly differently (Robin and KF surviving the explosion but getting knocked out, Iris being pregnant with Dawn and Don, etc…) and these events led to the future of one Bart Allen.
My name is Bart Allen, grandson of Iris and Barry Allen. I'm from a terrible future, so I decided to study the past. Inevitably coming across how everything went so wrong.
My name is Impulse, grandson of the Flash. I'm from a terrible future, so I decided to change the past. Inevitably preventing how everything went so wrong.
Did it work?
Did I manage to go back in time? Far enough that all those things hadn't happened yet? That I can change the future? Stop it from ever happening?
Miss Martian, Aqualad, Superboy, Artemis… All those who died are here.
I did it! I did it! Step one is complete!
Step one… I have a lot of work to do… Still, I can meet the people I was always told stories about. The heroes and legends of old.
How cool is that?
I was wrong. I didn't go back in time far enough. In fact, I probably didn't go back in time at all. I'm in a completely different dimension. The events that lead to my future… They never happened here. Just some simulation.
I don't know if I want to cry. My reality was just some simulation to them. My reality which I can't change, can't fix. I came back for a reason, a mission, and now I can't even do that.
I'm not a hero, striving for a better future. I'm a refugee, running away from a terrible past.
My name is Bart Allen, and everything I know is now a lie.
My name is Impulse, and I just made a big mistake.