Both Jimmy and Meyer are going to be de-aged. In order to make things exceptionally difficult for the both of them, Jimmy is going to retain all his memories of being an adult and is going to be pissed to be stuck in a little kid's body, whereas Meyer is going to have absolutely no memories and, conveniently, since he'll have no memories of being an adult, he also won't be able to speak English. Whoops.

Jimmy will be about nine and Meyer will be about six. If anyone wants either of them to bug them, y'know, I'm up for just about anything.