Hal and John's upcoming HBO show may be set on Earth, but that doesn't mean some alien Lanterns won't be a part of their story.

HBO’s Green Lantern series has found its villain. Ulrich Thomsen (The Blacklist, Banshee) will play DC Comics villain Sinestro in the upcoming superhero series Lanterns, our sister site Deadline reports.

The DCU's Sinestro has arrived. In the upcoming series Lanterns, the DC supervillain will be played by Ulrich Thomsen. Per Deadline, it's been reported that Ulrich Thompsen has taken on the role of the live-action Sinestro in Lanterns,

It was looking like Hal Jordan's most infamous foe may not be a part of the HBO/Max Lanterns series, but we now have word that Ulrich Thomsen has joined the cast as

EXCLUSIVE: Ulrich Thomsen (Counterpart, The Blacklist) has been tapped to recur in the HBO, WBTV and DC Studios series Lanterns as DC supervillain Sinestro. The series follows new recruit John Stewart (Aaron Pierre) and Lantern legend Hal Jordan (Kyle Chandler),