Captain Flash was one of those interim superheroes who came in went during the "Dark Age" of comics between EC and the Silver Age. With atomic based powers he activated by clapping his hands he fought crime and spies and aliens alongside his non-powered sidekick, Ricky. Seriously, couldn't someone have spent more time coming up with better sidekick names? GCD says this is Mike Sekowsky who came up with the character but it doesn't look nearly as much like the future JLA artist as most of the Captain's adventures do. Perhaps he had a rather heavy-handed inker here?