Russell "Slim Gray" Gibson (died January 8, 1935) was an American bank robber and Depression-era outlaw associated with Alvin Karpis and the Barker Gang during the late 1920s and 1930s.
He participated in his first major robbery when he teamed with Neal Merritt and James "Cowboy" Long to rob a bank messenger in Oklahoma City of $75,000.
Federal agents managed to trace him and his wife to a Chicago hideout used by the Barkers and raided the apartment building on January 8, 1935.
The raid was bungled from the start as the FBI set off tear gas in the wrong apartment causing a panic among the tenants.
[2] His wife was arrested on charges of harboring a fugitive; two other gang members, Byron Bolton and Doc Barker, were also captured.