We know Jerome is teaming up with Penguin when Season 4 returns, and we are pretty sure that the classic Batman comic arc “Death in the Family” will partly inform the fun.
And he might very well do that, since David Mazouz says Jerome will be taking over Gotham City as part of a truly horrific upcoming episode.
So really, it doesn’t matter where Jerome shows up next, or what parts of him are bleeding, so long as nothing stops him from talking and laughing and being amazing.
Now that looks like the Jerome we see more often, and Arkham needs to quickly wise up on the fact that its guards are pretty terrible at doing their jobs there, lest Jerome already get to break free in his first episode back.