Cameron Monaghan doesn’t seem to have any idea of when Jerome might be back to wreak fresh havoc on the people of Gotham City, but he clearly knows that Jerome will just keep getting bigger and bloodier each time he returns.
The winter finale was a showcase of his willingness to escalate any scenario to the point of utter lunacy if it means an especially violent and spectacular outcome.
Jerome was already pretty bonkers way back in his first episode, and it’s clear that death, resurrection, and face-stapling has not exactly made him any saner.