Danish filmmaker and actor Ulrich Thomsen has been cast in James Gunn and Peter Safran's DCU as the supervillain Thaal Sinestro, who is Hal Jordan's mentor and later goes on to become the latter's arch-nemesis.

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),