 Later, in "JSA" (Vol 2), Johnny Quick theorized that his power stemmed from Rex's metagene, and that his powers could be accessed without the need for Miraclo.Rex used the mantra "Man of the Hour" taught to him by Quick (who used a similar mantra to access his own powers) to gain his strength and speed, though they were still limited to one hour's time.Rex later provides technical support for the new JSA All-Stars team, of whom his son was a member, helping them put together their new headquarters.