jerome and a group of other arkham asylum inmates had recently been broken out by theo galavan. the escapees were making their own group of sorts - the maniax.

people were being strapped into straightjackets, mouth duct taped and then a letter spray painted onto them before finally getting chucked off of a building. the aim was to make an array of dead people which eventually would spell out 'maniax'.

you were the letter X, and jerome had just finished the spray paint on your jacket.