By Junior, do you mean the baby rex from The Lost World? Or a different rex?
The very same!
The affectionate fandom name which I don't believe I've ever actually used, but who also might have always been my favorite rex as a kid (I might just be saying that because I'm excited, but also going back in my files, I can't imagine that ten-year-old me WOULDN'T feel attached to a baby T. Rex, also, I got his toy).















