Yeah, I'm his ancestor.

[Taking a deep breath, he holds it for just a second, then lets it go in a rush.]

On my world, there are these people called meta-humans. They have special powers, more than regular humans. He was one, a speedster, and when a speedster runs fast enough, he can go back or forward in time. I guess he went back in time, to kill someone before he could be born. But he got stuck in my time, and...you know, he was tormenting him and everyone he cared about. One of whom happened to be my fiancée, so I got involved and...it got to this point. It was me or them. I chose me.