Tom Welling, <EM>Smallville</EM> Tom Welling, Smallville

Clark Kent may be more powerful than a locomotive, but even a Superman cant handle every crisis by himself. Enter Oliver Queen, aka Green Arrow, the latest DC Comics character to visit Smallville. Famous for his peerless skill with bow and arrow, Oliver will appear in at least seven episodes this season, which premieres Sept. 28 on the new CW network. He will start to form the nascent Justice League, says executive producer Al Gough. Hes trying to find like-minded people with special powers and put a more formal structure in place.

As with previous superhero guest stars, like the Flash, Clark (Tom Welling) will be initially wary of Green Arrow. Ultimately, Clark will see the value of what he is trying to do, Gough says. But as hes gotten older, Clark has become more cautious. He will always be there to help out, but he doesnt want to be part of a formalized organization.

Justin Hartley, best known for playing hunky rich boy Fox Crane on NBCs soap Passions, has been cast in the role. Hartley starred in the pilot for an Aquaman series that Gough and his producing partner, Miles Millar, had developed for CW, and when that show wasnt picked up, they quickly offered Hartley the Smallville gig. What really appealed to us is that he has a great combination of sexiness and humor, Gough says. Thatll also appeal to Lois Lane (Erica Durance), who Gough says will take a romantic interest in the emerald archer.

Cupids arrows will also hit Clarks best friend, Chloe Sullivan (Allison Mack), and a young "Daily Planet" coworker by the name of Jimmy Olsen. Thats right, Supermans future pal joins the Smallville universe as a recurring guest star. Chloe and Jimmy met off screen a few years ago when they were summer interns at the "Planet." In our first episode back, they reconnect, Gough says. And so Chloe Sullivan finally gets a boyfriend. Thats one team-up even Clark should approve of.