The Cold Gun is a weapon that was designed by Cisco Ramon at S.T.A.R. Labs, to stop Barry Allen in case he used his powers with malicious intent. The gun was snatched by Basil Nurblin, and later taken by Leonard Snart, who used it in his guise as Captain Cold. The weapon would change multiple owners, ending up in the hands of Ray Palmer, self-titled Colonel Cold. A 2014 version of the gun was used by Snart while he was a member of the Legion of Doom.