The heroes have come from the future to assist Clark in defeating their enemy, all previewed in the new promo of 'Smallville'.
Another preview to "Smallville" 8.11 which is titled "Legion" has been made available by The CW. A considerably longer in length, the preview shows more on the new heroes that will take the series to the next level. "Legion" is the reference to the name of the superheroes from the 31st century.
Three superheroes from the future travel to the past and join Clark in hopes that together they can defeat Brainiac, who has taken over Chloe's body. More about Clark finding his fate to be a hero, and him meeting Lana once again are exposed in this episode which will hit the screen on January 15.
Talking about the Legion, writer Geoff Johns previously said, "They are absolutely, 100% on point with the Legionnaires and their relationship with Clark Kent. I can say you'll see an appearance by one of the Legion's better known enemies."
The producers reportedly have prepared several options to end this season with two different plots at open ends. It is either "a heroic send-off or a heartbreaking decision for Clark to move on to the next phase" but it will depend on whether the eight season will be the final or not.