AceShowbiz -

As previously reported, some members of Justice Society of America (JSA) will come out of retirement to give the "screwed-up guys of next generation a needed smack-down" on "Smallville". General Zod and Metallo have shown their faces while Roulette and Speedy are going to make their debut in the remaining episodes of this month. JSA line-up, meanwhile, has just been revealed.

Instead of the full line-up, producers said the society will only feature four of them, Hawkman, Spectre, Atom and Doctor Fate. However, it is recently revealed by Fancast that Stargirl will also make a cameo and that she will be played by Britt Irvin. The actress previously had a role on "George of the Jungle" and will be in the pilot of the upcoming "V".

Meanwhile, only two out of the four mentioned guys in JSA have had their actors. According to IGN, Michael Shanks will be playing Hawkman while Brent Stait will be tackling Doctor Fate. Both played roles on "Stargate: Atlantis".

The episode where they show up will air in January 2010.

Stargirl has the speed and agility born from being an avid gymnast. She can shoot stars from her Cosmic Converter Belt and manipulate the enemy's energy. Hawkman is powered by Nth Metal which makes up his wings, belt, boots and harness. He is an expert with archaic weapons such as battle axes, spears and shields. Unlike them, Doctor Fate possesses a mystical power such as teleport, telekinesis and transformation.