Booster Gold! He's the greatest hero you've never heard of... until now!

It's a name you don't know, but one you won't soon forget. A favorite to long-time DC Comic fans, the Golden one is a glory-seeking showboat from the future.

Eric Martsolf guest stars as this new character on Smallville this week.

Watch a promo for this Friday's episode, entitled "Booster," along with a new promo for the epic May 13 series finale that will get fans' hearts racing, below ...

Steve Marsi is the Managing Editor of TV Fanatic. Follow him on Google+ or email him here.