[@Marx]
Alrighty, I can definitely try to do that!
Honestly, I was just trying to find something that called to me so I went with the one that seems the most promising in coincidence with this particular character. I'm assuming that they're from alternate dimensions and they probably don't stay very long because he's only ever had it happen at random, assuming the younger version of him probably sort of zapped away before he had much time to get acquainted with him. I'm into a more fluid view of time so there's that edge of leeway room there, plucking from certain timelines and assuming those timelines sort of crumple each time he takes a version of himself from them.
I think that at a time, he can only bring about three forward but they'll vary heavily in age and depending on if he learns to control it in a fixed way, they'll stick around awhile but for now, they appear kind of at random, depending on his thought process and they generally last a few minutes, maybe an hour.