Captain Cold built a gun, based on a cyclotron, which emitted blasts of ice and cold. A early example of one of Cold's guns was kept at The Flash Museum. Wally West dismantled it in an effort to learn how to modify a cyclotron being built at S.T.A.R. Labs so that it would release a pulse of absolute zero temperatures across the city, halting an alien attack.
Captain Cold built a gun, based on a cyclotron, which emitted blasts of ice and cold. A early example of one of Cold's guns was kept at The Flash Museum. Wally West dismantled it in an effort to learn how to modify a cyclotron being built at S.T.A.R. Labs so that it would release a pulse of absolute zero temperatures across the city, halting an alien attack.