User blog comment:Rassilon of Old/Ep. 122 "Agendas" discussion/@comment-3337007-20120324205434/@comment-1038387-20120324210124

Not entirely.

The Atom shown in this ep is Raymond Palmer (likely, image's not that sharp. Don't think it's Ryan Choi).

The other Atom was a founding member of the JSA, Al Pratt.

Captain Atom is not related to the Atom legacy.