They are Stormwatch, a dangerous super human police force whose existence is kept secret from the world Directly following the ominous events of SUPERMAN #1, Adam One leads half the Stormwatch team to recover the [INFORMATION REDACTED] from deep in the Himalayas. Meanwhile, Jack Hawksmoor and the rest of the Stormwatch crew look to recruit two of the deadliest super humans on the planet: Midnighter and Apollo! And if they say no? Perhaps the Martian Manhunter can change their minds...
Superman appears in one panel of the issue but it does not count as a credited appearance as it is not actually Superman but a photo-shopped picture Projectionist finds on the Internet, depicting Apollo beating the tar out of "you-know-who" on comparethepowers.com.
The Demon Knights also appear in a single panel as a flashback to what are assumed to be previous incarnations of Stormwatch.