Creager was an inmate in Rikers Island. He shared a cell with Baxter Stockman.
During Stockman’s incarceration in prison at Rikers Island, his cellmate, Creager (no first name given), provided him with guidance and protection. One evening, as Stockman is drawing formulas on the prison cell wall with a piece of chalk, he thanks Creager for his help during what he calls his “brief incarceration”. He then promises Creager that he will be amply rewarded in the new dynasty that is to come.
Creager is resting on his bed nearby, thumbing through a magazine. He acknowledges Stockman’s thanks, calling him Dr. Egghead. Then he says that the last time he checked, Stockman was still stuck in there like everyone else. He asks if Stockman has some sort of special parole no one knows about. There is a rumbling sound from just outside the wall and Stockman says yes, he could say that. The wall then crashes inwards, heralding the arrival of Rocksteady and Goldar. There is no sign of Creager at this point and no indication as to what might have happened to him.