Red Corker was a notorious killer and crime boss who was active in the San Francisco area in the 1940's until locked away in jail. However, during a prison riot, he escaped and returned to his old turf, setting up a hideout in the long abandoned Dream Island and continuing his criminal operations.
The FBI sent their agent Dale Sturm to capture him. Corker had his men attempt to eliminate Sturm, an attempt what would apparently be a complete success. However, Dale survived, and after Red kidnapped the daughter of wealthy oil magnate George Dean, Dale tracked Corker to his hideout. There, Dale shot Corker dead, and his men were soon apprehended afterward.
Red Corker's real name isn't mentioned on the comic story but is revealed in Marvel Mystery Handbook 70th Anniversary Special article about Dale Sturm.